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Your cart is empty. The RTL8157 features USB 3.2 Gen2 to provide higher bandwidth and improved protocols for data exchange between the host and the device. USB 3.2 Gen2 also offers more advanced power management features for energy saving. The RTL8157 is compatible with the IEEE 802.3u specification for 10/100Mbps Ethernet, the IEEE 802.3ab specification for 1000Mbps Ethernet, and the IEEE 802.3bz specification for 2500M/5000Mbps Ethernet.
The RTL8157 is suitable for multiple market segments and emerging applications, such as desktop, mobile, workstation, server, communications platforms, docking station, and embedded applications.
Features
Chipset:Realtek RTL8157
Data transmission rate: 5Gbps, 2.5Gbps, 1Gbps, 100Mbps
Interface: USB 3.2
Hardware:
1. Support USB 3.2 Gen1/2 and USB2.0
2. Support 5G Lite (2.5G data rate) mode, 2.5G Lite (1G data rate) and GlGA Lite (500M data rate) mode
3. Auto-negotiation (XNP) with extended next page function
4. Compatible NBASE-T for TM Alliance PHY Specification
5. Supports swap/polarity/skew correction
6. Crossover detection and automatic correction
7. Supports CDC-ECM and CDC-NCM
8. Supports hardware CRC (Cyclic Redundancy Check) function
9. Supports ECMA-393 ProxZzzy standard for sleeping hosts
IEEEE:- Compatible with IEEE 802.3, IEEE 802.3u, IEEE802.3ab
- Supports lEEE 802.1P Layer 2 priority encoding
- Supports IEEE 802.1Q VLAN tagging
- Supports lEEE 802.3az (Energy Efficient Ethernet)
- Supports IEEE 802.3bz (5G Base-T)
- Supports full-duplex flow control (802.3x)
Software Uninstall:- for Microsoft NDIS5, NDIS6 Checksum offload (IPv4, IPv6, TCP, UDP) and segmentation tasks
- Offload (Large Send v1 and Large Send v2) support
- Support for 16k jumbo frames
- Support for protocol offloads (ARP and NS)
- for Microsoft AOAC (Always On Always Connected)/Modern Standby
- Support for 32 sets of 128-wake-up frames with exact pattern matching
- Support for wake-up on link change
Support for Microsoft WPD (Wake-up Packet Detection):- CPPM (Converged Platform Power Management)
- Support for 3ms BESL for L1 (USB 2.0)
- Dynamic messaging (USB 3.2Gen1/2)
- Support for U1/U2/U3 (USB 3.2 Gen1/2)
- Support for Selective Suspen
System requirements:
- for Windows 11 (Note: Drivers provided for Realtek for Windows 7 & 10 have been tested to be unstable and we do not recommend using them. For Windows only for Windows 11 is recommended.)
- Linux
- MacOS 10.7 or later
- for QNAP QTS*
- Proxmox VE (PVE)*
Andy G
Reviewed in the United States on June 9, 2025
This unit works across the variety of systems that I tested. This includes Windows, Mac, Linux and SteamOS (I tried it on a SteamDeck OLED)! The Realtek driver that shipped with Windows 11 24H2 appears to have optimizations missing that let you achieve the advertised line rates. Thankfully, updating the driver using Windows Update (it shows up under "Optional Updates") clears this up!In all, I couldn't be any happier!I hope this review helps you make an informed purchasing decision!
D. N.
Reviewed in the United States on June 4, 2025
Connected this between my laptop and NAS, which only has a 2.5G port, and it immediately worked with no need for a driver download. Tested the transfer speed and it topped out at ~2.4Gbps speeds, around ~260-280MB/s after TCP overhead eats up its share.The attached USB-C-to-A adapter is a nice touch, especially where my laptop only has 1 USB-C port that is already occupied by a dock.
Michael
Reviewed in the United States on June 2, 2025
My MacBook Pro 16 M3 Max rarely leaves the house, spending almost all of its time tethered to a CalDigit TS4 dock which provides connectivity to various drives and other devices, as well as taking care of my ethernet connection. However, I do like to keep a standalone ethernet dongle on hand for those times when I do need to travel, or if I need to bring the laptop over to the networking closet to do some troubleshooting. I misplaced my previous adapter, so I ordered this one to replace it.This adapter worked perfectly, no drivers needed... I plugged it into the MBP, plugged in the ethernet cable, and it worked. Can't ask for more than that! I don't have a 2.5G or 5G network, just regular gigabit, but I do get the expected speed (around 940mbps with an iPerf test to another hardwired computer). I appreciate that, unlike my previous adapter which had a USB-A connector (and required an adapter), this one is USB-C, so it plugs right into the MacBook Pro (though it does include a USB-A adapter for older machines).
Lolz
Reviewed in the United States on June 10, 2025
Works really well! The inclusion of a USB A to C adapter is genius for a product like this and increased the usefulness significantly!Make sure you use this in a USB 3.0 or higher port to take full advantage of the speed if your network itself supports faster data rates than USB 2.0 allows!
Dr. P
Reviewed in the United States on June 10, 2025
It works on my network, and Windows says it's operating at 5Gbps. It's a Realtek chip. The USB connects securely.It gets warm, but not hot. This adapter does not get as hot as the 2.5Gbps adapter that it replaced. This one must have very good cooling.I'm using this with a micro tower PC that is impossible to upgrade with internal components, and it's been stable and reliable. Very solid connection and performance.I'm happy with this item, and have been looking and waiting for a device with these capabilities for some time.
Joseph P. Argyle
Reviewed in the United States on June 1, 2025
The adapter is competitively priced. I appreciate the included usb A adapter. Really this thing can be made to work with most devices. Window, Mac, & Linux compatible. I have a few adapters like this from other manufacturers, this on seems to be a bit more sturdy. The metal on the housing is thicker & it's vented. The way the cable is mounted to the unit is better than most as well.
Daniel Fowlkes
Reviewed in the United States on June 1, 2025
My previous USB-A to ethernet adapter mysteriously stopped working, plus all my new laptops only have USB-C. This one seemed the best possible solution; it works with my existing setup and with my new laptops when I need to debug my access points.This worked as soon as I plugged it in. The traffic LEDs are a nice touch. No complaints.
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