REALTEK 8139B Dual Speed 10/100 Fast Ethernet LAN Card
The ethernet adapter is a dual-speed 10/100BASE-TX Fast Ethernet adapter based on the PCI 2.0 interface standards supporting 32-bit PCI bus mastering and Plug-and-Play functions. The Ethernet connection is through a single RJ-45 connector over an Unshielded Twisted-Pair (UTP) cable. The adapter automatically senses and switches to either 10 Mbps or 100 Mbps operations.

Realtek RTL8139B (Updated Chipset)
Includes socket for boot ROM
Two LEDs on Board
32 Bit PCI Local Bus Master Architecture
Ethernet IEEE 802.3 100Base-TX and 10Base T
Plug and Play
Standard RJ-45 Connector
Autodetection of 10Mb or 100Mb
Supports half and full duplex operation
Full set of Driver Support
Netware 3.X, 4.X, Windows NT
LAN Manager, LAN Server
DOS ODI, Novell Netware V3.11,3.12, V4.x Server/Client
NDIS2V2.0 for DOS and OS/2, WFW 3.1/3.11
BANYAN VINES R5.52, IBM LAN Server V3.0/V4.0, OS/2 WARP
SUN PC-NFS C 5.x, Win NT 3.51/4.0/5.0 95/98
SCO Unix and others!