D-Link DES-1252 1000Mbps Copper, ports in the front, panel, Chassis, Dimensions, AC input

1.DEM-330T (TX-1550/RX-1310nm), up to 10km, Single-Mode

2.DEM-330R (TX-1310/RX-1550nm), up to 10km, Single-Mode

3.DEM-331T (TX-1550/RX-1310nm), up to 40km, Single-Mode

4.DEM-331R (TX-1310/RX-1550nm), up to 40km, Single-Mode

21000Base-T ports

1000Mbps Copper	1000Base-T ports compliant to following
	standards:
ports in the front
	1.	IEEE 802.3 compliance
panel
	2.	IEEE 802.3u compliance
	3.	IEEE 802.3ab compliance
	4. Support Full-Duplex operations
Chassis
Dimensions	19-inch, 1U Rack-mount size
	440mm x 310mm x 44mm
Reset button on the	A factory reset button x 1
front panel
Physical & Environment
AC input	100~240 VAC, 50/60Hz
	Internal universal power supply
Operation	0~40°C
Temperature

7