StarTech.com Parallel/serial combo card - PCI - parallel, serial - 3 ports - Add a parallel port and two RS-232 serial ports to your PC through a PCI expansion slot - serial parallel pci - pci serial adapter - pci rs232 -ieee 1284 card

StarTech.com 4 Port IEEE-1394 FireWire PCI Card - Add 4 FireWire ports to a desktop computer through a PCI slot - pci firewire card - 1394 pci firewire card - pci firewire 400 -4 port firewire card

StarTech.com 3 Port 2b 1a PCI 1394b FireWire Adapter Card with DV Editing Kit - Add 2 FireWire-800 and 1 FireWire-400 to your desktop computer through a PCI slot

Epson UB-S01 Serial Adapter - RS-232 Serial - 1 Pack

Manhattan Type-C to Gigabit Network Adapter - USB 3.1 (Gen 1) Type C - 1 Port(s) - 1 - Twisted Pair - 10Base-T, 100Base-TX, 1000Base-T - Portable

Cisco C9200 Stack Kit Spare

Cisco Stacking Module - For Data Networking - Plug-in Module - 1 Pack

Catalyst 9200 Stack Mod

Cisco Stack Kit

HP 25Gigabit Ethernet Card - 2 Port(s) - Coaxial - Low Profile Bracket Height - SFP28 - Plug-in Card

Lenovo ThinkStation Intel I210-T1 Single Port Gigabit Ethernet Adapter - PCI Express - 1 Port(s) - 1 - Twisted Pair - 10/100/1000Base-T - Plug-in Card

Axiom 10Gbs Dual Port RJ45 PCIe x8 NIC Card for HP - 656596-B21 - 10Gbs Dual Port RJ45 PCIe x8 NIC Card

HP Allied Telesis AT-2911T/2-901 Dual Port 1GbE NIC - 2 Port(s)

Axiom 10Gbs Dual Port RJ45 PCIe 3.0 x4 NIC Card for HP - 817738-B21 - 10Gbs Dual Port RJ45 PCIe 3.0 x4 NIC Card

APC by Schneider Electric AP9640 UPS Management Adapter - USB

APC by Schneider Electric UPS Management Adapter - SmartSlot

HPE StoreOnce 25Gigabit Ethernet Card - Optical Fiber - 25GBase-X, 10GBase-X

HPE StoreOnce Gen4 32Gb Fibre Channel Network Card - 32 Gbit/s - Plug-in Card

Cisco Catalyst 9300 2 x 25G Network Module - For Optical Network, Data NetworkingOptical Fiber25 Gigabit Ethernet - 2.0 x Expansion Slots - Plug-in Module

Meraki Eight 25G Uplink Module - For Data Networking, Optical NetworkOptical Fiber25 Gigabit Ethernet - 25GBase-X - 8.0 x Expansion Slots - SFP28

Intel Ethernet Server Adapter I350-T4 - PCI Express 2.1 x4 - Intel I350 - 4 Port(s) - 4 x Network (RJ-45) - Twisted Pair - Full Height Bracket Height - Low-profile, Full-height - Bulk - 10/100/1000Base-T - Plug-in Card

Cisco Catalyst IE3300 Rugged Series Module, 16 Non-PoE Copper - For Data Networking - 16 x RJ-45 1000Base-T LAN - Twisted PairGigabit Ethernet - 1000Base-T

Cisco Catalyst IEM-3300-4MU Expansion Module - For Data Networking - 8 x RJ-45 2.5GBase-T LAN - Twisted Pair2.5 Gigabit Ethernet - 2.5GBase-T - DIN Rail

Cisco Catalyst IE3400 Rugged 8 Port GE Adv Exp Module - For Data Networking - 8 x RJ-45 1000Base-X LAN - Twisted PairGigabit Ethernet - 1000Base-X - DIN Rail

Cisco Catalyst IE3400 Rugged 8 Port GE Adv Exp Module - For Data Networking - 8 x RJ-45 1000Base-T LAN - Twisted PairGigabit Ethernet - 1000Base-T - DIN Rail

USB C to Ethernet Charge Ada

HPE Aruba 3810M 4SFP+ Module - For Data Networking, Optical NetworkOptical Fiber10 Gigabit Ethernet - 10GBase-X - 4.0 x Expansion Slots - SFP+ - 1 Pack

HPE Aruba 3810M 4-port Stacking Module - For Stacking - 4.0 x Expansion Slots - 1 Pack

Cisco 8-Port Gigabit Ethernet Switch NIM - For Data Networking, Optical Network - 8.0 x Expansion Slots - SFP (mini-GBIC)

Cisco PVDM - For Data NetworkingNetwork Interface Module (NIM)