Sorry, that product is no longer available. But here are other great products for you to choose from.
Add 4 DIN Rail-mountable RS232 Serial ports to any system through USB
Cisco Catalyst 4500E Series Universal PoE Line Card - Switch - 48 x 10/100/1000 (PoE) - plug-in module - PoE - for Catalyst 4500E, 4503-E, 4506-E, 4507R+E, 4507R-E, 4510R+E, 4510R-E
Transition N-GSX-SC-03 - Network adapter - PCI 64 low profile - 1000Base-SX - 850 nm
Cisco Catalyst 3560CX-12PD-S - Switch - managed - 12 x 10/100/1000 (PoE+) + 2 x combo SFP+ - desktop, rack-mountable, DIN rail mountable, wall-mountable - PoE+ (240 W)
Ubiquiti Unifi UAP-AC-PRO - Wireless access point - 802.11a/b/g/n/ac - Dual Band
Cisco - SFP (mini-GBIC) transceiver module - Gigabit Ethernet - 1000Base-SX - LC/PC multi-mode - up to 0.6 miles - 850 nm - for Cisco 38XX, 7301, 7301 VAM2+; Catalyst 29XX, 3560, 3750; Catalyst Express 500
Cisco Catalyst 2960-X series switches are fixed-configuration, stackable Gigabit Ethernet switches that provide enterprise-class access for campus and branch applications.
Cisco Fourth-Generation Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module - Expansion module - T1/E1 x 2 - T-1/E-1 - for Cisco 4451-X
Cisco - SFP+ transceiver module - 10 Gigabit Ethernet - 10GBase-SR - LC/PC multi-mode - up to 984 ft - 850 nm - for Catalyst Switch Module 3012, Switch Module 3110G, Switch Module 3110X; Nexus 5010
Axiom - Network adapter - PCIe 2.0 x8 - 10 Gigabit SFP+ x 2
Extreme Networks ExtremeSwitching X440-G2 X440-G2-48p-10GE4 - Switch - managed - 48 x 10/100/1000 (PoE+) + 2 x 1 Gigabit / 10 Gigabit SFP+ + 4 x combo SFP - rack-mountable - PoE+
Cisco Line Card E-Series - Switch - 12 x 10 Gigabit SFP+ - plug-in module - for Catalyst 4503-E, 4503-E Data Bundle, 4503-E PoE Bundle, 4506-E, 4506-E PoE GE Bundle
Tripp Lite U360-004-MINI is a compact, 4-Port USB 3.0 SuperSpeed hub, with built-in cable, that provides up to 5Gbps transfer rates in a compact, portable format ( Computer and devices must be both USB3.0 rated to achieve maximum 5Gbps speeds ).
The Cisco 4000 Family Integrated Services Router (ISR) revolutionizes WAN communications in the enterprise branch. With new levels of built-in intelligent network capabilities and convergence.
Cisco ISR 4331 - Unified Communications Bundle - router - GigE - WAN ports: 3 - rack-mountable
C2G Cisco GLC-SX-MMD Compatible 1000BASE-SX MMF SFP (Mini-GBIC) Transceiver Module - SFP (mini-GBIC) transceiver module (equivalent to: Cisco GLC-SX-MMD) - Gigabit Ethernet, Fibre Channel - 1000Base-SX - LC multi-mode - up to 1800 ft - 850 nm - for ...
Cisco Catalyst 3850-48F-L - Switch - managed - 48 x 10/100/1000 (PoE+) - desktop, rack-mountable - PoE+ (800 W)
Cisco VG204XM Analog Voice Gateway - VoIP phone adapter - 10Mb LAN, 100Mb LAN
Cisco Catalyst 3650-48PS-L - Switch - managed - 48 x 10/100/1000 (PoE+) + 4 x SFP - desktop, rack-mountable - PoE+ (390 W)
Axiom - SFP (mini-GBIC) transceiver module (equivalent to: Cisco GLC-SX-MM) - Gigabit Ethernet - 1000Base-SX
Cisco - SFP (mini-GBIC) transceiver module - Gigabit Ethernet - 1000Base-LX, 1000Base-LH - LC/PC single-mode - up to 6.2 miles - 1310 nm - for Cisco 38XX, 39XX, 4451, 892; Catalyst 29XX, 3650; ME 3600; Supervisor Engine 8; UCS 62XX
Cisco Catalyst 2960X-24PS-L - Switch - managed - 24 x 10/100/1000 (PoE+) + 4 x Gigabit SFP - desktop, rack-mountable - PoE+ (370 W)
Cisco Catalyst 2960X-48TS-L - Switch - managed - 48 x 10/100/1000 + 4 x Gigabit SFP - desktop, rack-mountable