To add 4 Gigabit Ethernet ports on a Lenovo "Small Case" type Tiny5, M720Q M920Q M920X P330.
Compatibility:
Windows 20000, ME, 98SE, Windows Server 2003 XP Vista 2008 7 8 10 11 32/64-bit, Linux, MAC OS 10.4 and above and DOS.
Features :
FOUR REALTEK RTL8111H CHIPSETS (1 per port).
For PCI EXPRESS 4x 1.1 port.
4 Ethernet ports via RJ45 plugs.
Integrated 10/100/1000M transceiver, autonegotiation.
Compatible with Giga Lite (500M) mode.
Compatible pair swap/polarity/skew correction.
Crossover detection and correction.
Support hardware ECC/CRC functions.
MSI/MSI-x compatible.
Complies with IEEE802.3, 802.3u and 802.3ab standards.
Support IEEE 802.1P layer 2 Priority Encoding / 802.1Q VLAN tagging / IEEE 802.3az-2010(EEE) / Full Duplex flow control (IEEE.802.3x).
Jumbo frame 9Kbytes.
Compatible with RSS, Protocol Offload (ARP&NS), Microsoft WPI (Wake Packet Indication) and ECMA-393 ProxZzzy Standard.
  CARD SUPPLIED WITH MOUNTING KIT FOR LENOVO FLAT CASE.