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10Gtek 1.25G SFP-T, 1000BASE-T Copper SFP, SFP to RJ45 SFP Module Transceiver for Cisco SFP-GE-T, Meraki, Fortinet, Ubiquiti UniFi UF-RJ45-1G, D-Link, Supermicro, Netgear, TP-Link and More

4.6 4.6 out of 5 stars 1,513 ratings
$19.99
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1000Base-T
1
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Purchase options and add-ons

  • Data Rate: 1.25Gb/s
  • Interface: RJ-45; Cable Type: CAT.5e
  • Reach: up to 100 meters transmission over CAT.5e
  • Wide Compatibility - for Cisco, Cisco Meraki, Ubiquiti, Fortinet, D-Link, Supermicro, TP-Link, Broadcom, Linksys, TP-Link TL-SM331T and Other Open Switches.
Make it a bundle
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10Gtek 1.25G SFP-T, 1000BASE-T Copper SFP, SFP to RJ45 SFP Module Transceiver for Cisco SFP-GE-T, Meraki, Fortinet, Ubiquiti UniFi UF-RJ45-1G, D-Link, Supermicro, Netgear, TP-Link and More

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  1. XZSNET 1000BASE-T SFP Transceiver, SFP to RJ45, 1.25G Copper SFP to Ethernet Module Compatible with Cisco GLC-T/SFP-GE-T, Ubi
  2. 1.25/2.5/5/10G SFP+ to RJ45 Transceiver, 10GBase-T Copper SFP+ Module, 10Gb Ethernet Adapter for Cisco SFP-10G-T-S, Ubiquiti
  3. 10Gtek SFP to RJ45 1000BASE-T Copper Transceiver, 1.25G SFP-T Module for Cisco SFP-GE-T, Meraki, Fortinet, Ubiquiti UniFi UF-
  4. 10Gtek 1.25G SFP 1000Base-SX Multimode LC Fiber Transceiver Module, 850nm MMF, 550m, for Cisco GLC-SX-MMD/GLC-SX-MM/SFP-GE-S,
  5. 4PCS 1000BASE-T Gigabit SFP to RJ45 Copper Ethernet Modular Transceiver for Cisco,Meraki,Ubiquiti,D/TP Link,Supermicro,Netgea
  6. 10Gb SFP+ RJ45 Transceiver, 10Gbase-T SFP+ Ethernet Module Support 10G/5G/2.5G/1.25G, Compatible with Cisco SFP-10G-T-S, Ubiq
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 0.79 x 0.79 x 0.01 inches; 1.41 ounces
  • Item model number ‏ : ‎ ASF-GE-T(Cisco-1pc)(CA)
  • Date First Available ‏ : ‎ March 3, 2015
  • Manufacturer ‏ : ‎ 10Gtek
  • ASIN ‏ : ‎ B00U77IJ2M
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.6 4.6 out of 5 stars 1,513 ratings

Important information

Legal Disclaimer

10Gtek’s products are third-party products and 100% compatible to work with Cisco System or other brands but the information displayed may slightly vary from original products.

Product Description

1000Base-T 100/1000Base-T 10GBase-T SX LX SFP+SR
1000Base-T 10/100/1000Base-T 10GBase-T 1000Base-SX 1000Base-LX 10GBase-SR
Customer Reviews
4.6 out of 5 stars
1,513
4.6 out of 5 stars
1,513
4.6 out of 5 stars
1,513
4.8 out of 5 stars
281
4.7 out of 5 stars
204
4.7 out of 5 stars
778
Price $19.99 $19.99 $52.99 $12.99 $13.99 $10.99
Data Rate 1.25G 100/1000M 10G 1.25G 1.25G 10G
Wavelength RJ-45 RJ-45 RJ-45 850nm 1310nm 850nm
Fiber Type CAT.5e CAT.5e CAT.6a/CAT.7 MMF SMF MMF
Distance 100 m 100 m <30 m 550 m 20 km <300 m
Optical Comp. N/A N/A N/A PF/PIN FP/PIN VCSEL/PIN
Tx Power(dBm) - - - -8~-4 -9~-3 -1~-6
E.R(dBm) - - - >9 >9 ≥6
Rx Sens.(dBm) - - - -18~0 -22~-3 -11.1~-1
Temp(℃) 0~70 0~60 0~60 0~70 0~70 0~70
10Gtek 1.25G Transceiver Module
10Gtek 1.25G Transceiver Module
10Gtek 1.25G Transceiver Module
10Gtek 1.25G Transceiver Module
10Gtek module packaging

Product guides and documents

User Manual (PDF)

Looking for specific info?

Customer reviews

4.6 out of 5 stars
4.6 out of 5
1,513 global ratings

Customers say

Customers like the value, performance, and quality of the electronic switch. For example, they mention it's great value for the cost, works perfectly well, and is reliable. Some appreciate the ease of installation. That said, opinions are mixed on speed, connectivity, and temperature.

AI-generated from the text of customer reviews

179 customers mention147 positive32 negative

Customers like the performance of the switch. They say it works as expected, works great with the unifi dream pro, and flawlessly with CAT6a backbone. Some mention that the transceivers work quite well and allow you to create one or two extra ports. Some say that the switch runs hot.

"Works great in my microtik 10gbps switch. Doesn't support reporting temperature though." Read more

"...They initially worked well - one servicing a specific VLan and one servicing a trunk port. But after a few days they stopped working...." Read more

"...-operational issue with an old SPF switch and a SPF+ L3 switch.. worked well and worth having in the arsenal." Read more

"These fit my nether switches and worked well with the NAS and computer to switch data around the small business network." Read more

44 customers mention31 positive13 negative

Customers like the quality of the electronic switch. They say it's very high quality, rock solid, reliable, and worth having in the arsenal. Some customers also mention that the module is perfect and worth the money. Overall, customers are satisfied with the versatility and reliability of the switch.

"...updating switch firmwares the adapters have been very stable and reliable and seem to work with this switch as originally expected...." Read more

"It's been rather rock solid and I'm getting maximum throughput with the GFiber service I purchased...." Read more

"...It would negotiate and send/receive data but the local-managed UI in Aruba would break — showing no port data for any port when this module was in..." Read more

"...an old SPF switch and a SPF+ L3 switch.. worked well and worth having in the arsenal." Read more

36 customers mention36 positive0 negative

Customers appreciate the value of the electronic switch. They mention that it works great, is cheap, and saves a bunch of money. Some say that it's better than getting fiber based modules.

"...Price was good. Delivery was good, initial working was good just not reliable in my set up unfortunately...." Read more

"...Great value for the money, and will probably buy another one to replace the other 10Gb-only SFP+ adapter that I'm currently using." Read more

"...I have a 2.5 GbE device and a 1 GbE device currently active. The price is great, and it’s working great. Yes, it gets hot, but that is normal." Read more

"...Great Job 10GTek for a great value quality product with customization and customer service." Read more

22 customers mention22 positive0 negative

Customers find the installation of the electronic switch to be easy. They mention that it works as advertised, is simply plug and play, and takes a whole 10 seconds to install. Some say that the module is recognized instantly with no configuration required on the switch.

"plug and play, negotiates at 10G and no traffic issues." Read more

"...It was recognized instantly with no configuration needed to make it work." Read more

"...Inexpensive and easy to install. Cute packaging." Read more

"This device worked great in my Ubiquiti 24 port switch. Zero effort install...." Read more

37 customers mention16 positive21 negative

Customers are mixed about the speed of the electronic switch. Some mention that it works with 10GB network as fast speeds, has great throughput, and operates at full speed. However, others say that upload speeds were down to 1mbps consistently, and that the RX and TX do not run at 1gig duplex speeds.

"...Like others I did have an upload speed issue. I was able to get 2Gbps down but only about 250Mbps up...." Read more

"Local traffic will transfer at good speeds with this but when connected on to my isp modem (Shows connected at 10Gbps) it will download at 2Gbps but..." Read more

"...my UDM, the download is correct at near 2Gbps, but the upload is throttled to around 480Mbps through the 10Gtek...." Read more

"plug and play, negotiates at 10G and no traffic issues." Read more

30 customers mention9 positive21 negative

Customers are mixed about the temperature of the electronic switch. Some mention that it has great throughput and a high operating temperature, while others say that it runs a bit hot and does not report its internal temperature or other operational parameters.

"Works great in my microtik 10gbps switch. Doesn't support reporting temperature though." Read more

"...however I do have one significant complaint — this module does not report temperature...." Read more

"...monitoring the connection for 72 hours with no issues and no excessive heat problems; these things do run hot but no more than expected with 20G NIC..." Read more

"...Works but runs hotter than expected and of course has no monitoring of that temp. However, after a month, so far so good." Read more

23 customers mention12 positive11 negative

Customers are mixed about the connectivity of the switch. Some mention that there were no issues with the connectivity to the Mellanox switch it went into, and the SFP connectors worked well. They also say that the connection is stable and has not dropped. However, other customers say that it dropped connection and they couldn't get it to link again.

"...Stable connection so far and it saves me from having to use another Ethernet port." Read more

"...10G SFP+ port and an Ubiquiti 2.5G RJ-45 port and it it could not make a data connection...." Read more

"...connection from the built in WAN RJ45 to this thing solved all of our connectivity issues." Read more

"...Ran for over 3 months but one day it dropped connection and I couldnt get it to link again. Then I had a hard time removing it from the SFP slot...." Read more

20 customers mention3 positive17 negative

Customers are dissatisfied with the compatibility of the SFP+ ethernet adapters. They mention that it's not fully compatible with the Ubiquiti UDM-Pro, Netgear, and Ubici hardware. The switch management software does not recognize the transceiver properly, resulting in a no link message. Some customers also report that the adapters do not work with UNIFI Switch US-48-500W, TP-LINK TL-SG3428 V2, and Ubititi 2.5G ether.

"...Clearly an issue with this module or its not Netgear compatible as it claims...." Read more

"...data but the local-managed UI in Aruba would break — showing no port data for any port when this module was in an SFP+ port...." Read more

"...for a while but i either got 2 paurs of bad modules or they are not compatible." Read more

"...Ubiquity Switch didn't recognize it at all (it is the only module I have that was unrecognized)...." Read more

Works with a Netgear MS510TX Switch
5 Stars
Works with a Netgear MS510TX Switch
I bought this for a Netgear MS510TX multgig switch. It has one SPF+ port (slot 10). I plugged in the module to the switch and then plugged into my Alienware Aurora R13's 2.5Gbps built in motherboard port. I am getting 125Mbps download and 20Mbps up. If I connect to one of the MS510TX's 2.5GBps port I get 1400Mbps download and 44Mbps up. Clearly an issue with this module or its not Netgear compatible as it claims.I tried setting the NIC to 1Gbps Full Duplex, and 2.5Gbps Full duplex instead of Auto and it makes no difference. I have a 10Gbps PCI-e NIC coming in the mail tomorrow. If having the 10GBps Module connected to a 10GBps NIC makes a difference I'll update the review. Using Windows 11 fully patched as of Jun 2022. Same Cat8 Ethernet Cable used for both speed tests.Update to 5 stars from 1 star: I just swapped it so my Netgear RAX120's 5Gig port talks to the 10g SPF+ module and my PC talkes to the MS510TX's built in 10G ethernet port and I now get my normal 1400Mbps down. So apparently the Aurora R13's built in 2.5Gbps NIC had an issue talking to the 10Gbps SPF+ Module.
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Top reviews from the United States

Kermit D Frog
5.0 out of 5 stars Great value! I use these in my 10gbps switch
Reviewed in the United States on April 23, 2024
Size: 10GBase-TNumber of Items: 1Verified Purchase
Works great in my microtik 10gbps switch. Doesn't support reporting temperature though.
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Ross Crowhurst
5.0 out of 5 stars Not stable with TP-Link TL-SG2210P - update
Reviewed in the United States on July 17, 2023
Size: 1000Base-TNumber of Items: 2Verified Purchase
Got these based on the reviews on Amazon and title included wide compatibility which listed TP-Link. They were easy to fit into my TL-SG2210P and after a while (maybe 10 minutes which seems a long time) they were recognized. They initially worked well - one servicing a specific VLan and one servicing a trunk port. But after a few days they stopped working. Tried changing ethernet cables around, powering switch off and on. They would periodically start to work but it was too unreliable in this particular switch so I have removed them.

Price was good. Delivery was good, initial working was good just not reliable in my set up unfortunately. Gave 3 stars since they sort of work so maybe in different switch they would be as good as the reviews suggest but for me they were a fail.

UPDATE: after updating switch firmwares the adapters have been very stable and reliable and seem to work with this switch as originally expected. For this reason it was reasonable to change rating to 5
5 people found this helpful
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Oculus
5.0 out of 5 stars Works great. High operating temperature.
Reviewed in the United States on April 25, 2024
Size: 10GBase-TNumber of Items: 1Verified Purchase
Works with my Ubiquiti Dream Machine Pro to connect to 2.2 Gbps service. I wasn’t expecting the operating temperature but it is as advertised.
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Jon V Hildebrand
5.0 out of 5 stars Working well with GFiber multi-gig service and Ubiquiti UDM-Pro
Reviewed in the United States on March 1, 2024
Size: 10GBase-TNumber of Items: 1Verified Purchase
It's been rather rock solid and I'm getting maximum throughput with the GFiber service I purchased. I have a 10GbBase-T connection happening between the Fiber Jack and the UDM-Pro on a SFP+ uplink port. Things have been rock solid for the last couple of days. Going to get another one of these to uplink my Synology to my 10Gb aggregation switch for fast throughput to the NAS device.
3 people found this helpful
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B. McCann
4.0 out of 5 stars Seems ok, some compatibility issues
Reviewed in the United States on April 25, 2024
Size: 10GBase-T(80m)Number of Items: 1Verified Purchase
It works with most things perfectly fine. On M2 Mac’s sometimes it wouldn’t negotiate 10Gig. I had to pin the Mac to 10G as well as the SFP+ port and then it worked fine.
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me..
5.0 out of 5 stars useful
Reviewed in the United States on March 15, 2024
Size: 1000Base-TNumber of Items: 1Verified Purchase
I picked this up to help debug an inter-operational issue with an old SPF switch and a SPF+ L3 switch.. worked well and worth having in the arsenal.
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evan thomas
5.0 out of 5 stars Fit and function
Reviewed in the United States on April 4, 2024
Size: 1000Base-TNumber of Items: 4Verified Purchase
These fit my nether switches and worked well with the NAS and computer to switch data around the small business network.
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Michael Gulick
5.0 out of 5 stars Adds 2.5Gb compatibility to 10Gb SFP+
Reviewed in the United States on April 9, 2024
Size: 1.25/2.5/5/10GBase-TNumber of Items: 1Verified Purchase
My switch, a Cisco CBS250-series switch, has 10Gb SFP+ ports, which do not support linking at 2.5Gb. This SFP+ adapter gives me bi-directional 2.5Gb data transfers between a 10Gb device and a 2.5Gb device.

Many SFP+ adapters claiming to support 2.5Gb will not work with a 10Gb-only SFP+. If they link at all, they will have good bandwidth in one direction (from 2.5Gb device to the 10Gb device), but not in the other direction, as the switch tries to send data at 10Gb but the device can't handle that, resulting in a large amount of packet loss and retransmissions. With this SFP+ adapter, the ASF-10G2-T, I see a full 2.5Gb in both directions, tested using iperf3. The CBS250 switch sees a 10Gb connection, and the device connected to the other end of this SFP+ adpater sees a 2.5Gb connection, and they reliably transfer data at 2.5Gb in both directions. From what I've read online, the chip used in this SFP+, the Marvell AQR113C, generates PAUSE frames to reliably slow down the 10Gb transmissions to 2.5Gb.

Great value for the money, and will probably buy another one to replace the other 10Gb-only SFP+ adapter that I'm currently using.
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Top reviews from other countries

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Mike
5.0 out of 5 stars Worked Great for my HP 1810 switch!
Reviewed in Canada on January 7, 2024
Size: 1000Base-TNumber of Items: 2Verified Purchase
Was worried it wouldn't work but the switch sees it and a connection is established at the full 1gb that the switch supports!
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Khadim lo
5.0 out of 5 stars Un bon produit
Reviewed in France on September 7, 2021
Size: 1000Base-TNumber of Items: 4Verified Purchase
Je commence à l'utiliser il y a pas longtemps mais rien à dire pour le moment. Reste à voir dans l'avenir.
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Pawan Bhattarai
5.0 out of 5 stars Wotks like charm in my Cisco 3750-x 12 port fiber switch
Reviewed in India on March 12, 2018
Size: 1000Base-TNumber of Items: 1Verified Purchase
Wotks like charm in my Cisco 3750-x 12 port fiber switch. And also in Cisco 2960-x....recommended to every network person....go for it guys.thumbs up
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Nicholas Fallis
5.0 out of 5 stars Wasn't sure it would work. Much cheaper than others
Reviewed in Canada on January 3, 2024
Size: 10/100/1000Base-TNumber of Items: 1Verified Purchase
Works great on the interface of my 10G Ethernet port on my switch to the 10G ports on my Bell Gigahub
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JéJé
5.0 out of 5 stars parfait
Reviewed in France on January 22, 2021
Size: 1000Base-TNumber of Items: 4Verified Purchase
parfait pour une liaison fibre , je relie deux Switch
2 people found this helpful
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