Open Box.

The 5-Port Gigabit GREENnet Switch from TRENDnet is a Gigabit Ethernet switch with impressive power-saving features: it can consume up to 70% less power than comparable switches.
 
The switch features 5 Gigabit Ethernet ports, all of which support Auto-MDIX negotiation. Compatible with all standard Ethernet protocols, the switch can be used to create networks to which computers of any operating system can connect.
 
5 10/100/1000Mbps Gigabit Ethernet ports, each featuring Auto-MDIX negotiation
GREENnet technology reduces power consumption when Ethernet ports are not in use, a connected device is turned off or in power-saving mode, and can adjust signal output based on Ethernet cable length
Utilizes the store-and-forward switching method with non-blocking wire-speed performance
IEEE 802.3x Full Duplex Flow Control supports full-duplex operation
Back pressure Flow Control supports half-duplex operation
Features a 1K MAC address table and 104KB of buffer memory
Operates and maximizes packet filtering and forwarding rate
Supports Jumbo Frame packets, up to 9KB in size
Housed in a sturdy metal enclosure
Front panel LEDs give indication of network status and activity
 
TRENDnet TEG-S50G Specs
Interfaces
Ports    5 x 10/100/1000 Mb/s Gigabit Ethernet (RJ45)
Protocols
Transmission Method    Store-and-Forward
MAC Address Table Size    1K
Standards
Supported IEEE Standards    802.3, 802.3ab, 802.3u, 802.3x
Performance
Electrical
DC Input Power    5 VDC at 2.5 A
AC Input Power    120 VAC, 60 Hz
Environmental
Operating Temperature    32 to 122°F / 0 to 50°C
Operating Humidity    10 to 90%
General
Dimensions    5.9 x 4.1 x 1.3" / 15 x 10.5 x 3.3 cm
Weight    0 lb / 0 kg
Packaging Info
Package Weight    0.85 lb
Box Dimensions (LxWxH)    6.6 x 6.2 x 2.7"