Lan Expansion? How about these?

Hp J9535A Expansion Module - 20 X 1000Base-T Lan

Hp J9536A Expansion Module - 20 X 1000Base-T Lan

J4820B HP ProCurve 24 x 10/100Base-TX Lan Expansion Module 24 Port Switch. New Bulk Pack.

CISCO GE SFP LC CONN-LX LH TRANSCEIVER

CISCO GE SFP LC CONN-LX LH TRANSCEIVER

J9064A HP Procurve 4204vl-48GS 44 x 10/100/1000 Ports + 4 x Mini 48 Port Switch. New Retail Factory Sealed with Full Manufacturer warranty.

J9064A HP PROCURVE SWITCH 4204VL-48GS .

2-PORT FAST ETHERNET 100BASE TX PORT ADA

Your business requires absolutely dependable connectivity that is fast, secure, and always-on. HP ProCurve switches and hubs deliver it.

HP ProCurve Gigabit-SX Module with SC Connectors for 4000M/8000M Switch, Single Card p/n J4113A with 90 days warranty

J8705A HP PROCURVE 20-PORT 10/100/1000 POE + 4-PORT MINI-GBIC MODULE FOR 5400 SERIES SWITCHES

1 x 1000Base-LX/LH - SFP (mini-GBIC)

AQ731AA - HP Essential USB 2.0 Port ReplicatorIncrease expansion for your notebook PC via an available USB 2.0 port with our Essential USB Port Replicator. It lets ...

Cisco 3750 PoE PoE Switch Adapter, Gigabit Ethernet SFP, 1000BASE-LH Transceiver, LC

Cisco Small Form-Factor Pluggable Gigabit Interface Converter Long Haul (GLC-LH-SM/GLC-LH-SM=)

HP ProCurve Switch 4204vl-48GS - switch - 44 ports (J9064A / J9064A#ABA)

HP ProCurve Switch 5400zl 20-Port 10/100/1000 + 4-Port Mini GBIC Module