An explansion board you insert into your computer so the computer can be connected to a network
StarTech.com Newer version available PEX1P2: 1 Port PCI Express Dual Profile Parallel Adapter Card - SPP/EPP/ECP - 1x DB25 IEEE 1284 PCIe Parallel Card (PEX1P)

StarTech.com Newer version available PEX1P2: 1 Port PCI Express Dual Profile Parallel Adapter Card - SPP/EPP/ECP - 1x DB25 IEEE 1284 PCIe Parallel Card (PEX1P)

StarTech.com
£26.99
Belkin INC012BTBK interface cards/adapter Internal RJ-45

Belkin INC012BTBK interface cards/adapter Internal RJ-45

Belkin
£29.99
Lenovo 4XH1S82999 interface cards/adapter Internal M.2

Lenovo 4XH1S82999 interface cards/adapter Internal M.2

Lenovo
£338.99
NEC SB3-AB1 interface cards/adapter Internal

NEC SB3-AB1 interface cards/adapter Internal

Sharp
£31.99
NEC 100014188 interface cards/adapter Internal

NEC 100014188 interface cards/adapter Internal

Sharp
£2,419.99
HP 5G Sub-6 WWAN interface cards/adapter Internal

HP 5G Sub-6 WWAN interface cards/adapter Internal

HP
£243.99
HP XMM 7560 R+ LTE-Advanced Pro WWAN

HP XMM 7560 R+ LTE-Advanced Pro WWAN

HP
£308.99
HP Intel Ethernet I350-T4 4-Port 1Gb NIC

HP Intel Ethernet I350-T4 4-Port 1Gb NIC

HP
£396.99
HP 2.5GbE LAN Flex Port Z2 Mini

HP 2.5GbE LAN Flex Port Z2 Mini

HP
£30.99
HP Z2 G5 2nd serial port adapter interface cards/adapter

HP Z2 G5 2nd serial port adapter interface cards/adapter

HP
£21.99
HP 1GbE LAN Flex Port 2020

HP 1GbE LAN Flex Port 2020

HP
£34.99
HP USB to Serial Port Adapter

HP USB to Serial Port Adapter

HP
£17.99