Description:
Gigabit Ethernet Adapter Card M.2 A+E 2.5G RTL8125B Main Control 2.5G/100M/1000M M.2 Network Card Computer Accessories
SM-LG8125B-BT M.2 A+E KEY RTL8125B 2.5G single electrical port network adapter, which combines four-speed IEEE802.3 compatible media access controller and four-speed Ethernet transceiver, in line with 10/100Mbps Ethernet IEEE802 .3u specification, IEEE802.3ab 1000Mbps Ethernet specification and IEEE802.3bz 2500Mbps Ethernet specification.
It also provides high-speed transmission via CAT5e UTP cable or CAT3 UTP (10Mbps only) cable.

Compliant with PCI Express specification revision v2.1.
Support 1-Lane 2.5/5Gbps PCI Express bus.
Onboard single 2.5G network port, integrated 10/100/1000M/2.5G transceiver.
Support 2.5G and 1G Lite, 100M mode.
Auto-negotiation with extended next page function.
Supports exchange/sex/skew correction.
Cross detection and automatic correction.
Compatible with IEEE802.3, IEEE802.3u, IEEE802.3ab.
Support IEEE1588v1, IEEE1588v2, IEEE80.2AS time synchronization.
Support the shaping algorithm based on IEEE802.1Qav credit.
Support IEEE802.1P layer 2 priority coding.
Support IEEE802.1Q VLAN tag.
Support IEEE802.3az-2010.

Specifications:
Bus type: M.2 A+E
System requirements: Win 7/Win 8/Server 2008/Win 8.1/Server 2012/2016, Win 10 32/64bit, Linux
Transmission medium: 1 x 2.5G RJ45 port
Transmission rate: 2.5G/1000/100Mbps
Network mode: support 2.5G and 1G Lite mode
Size: 50*29*7mm

Notes:
There might be little error of size for manual measurement.
The colors deviation might differ due to different monitor settings, please kindly understand.

Packing list

1 x M.2 A+E RTL8125B main card
1 x RJ45 terminal
1 x Driver CD
1 x network terminal cable