BLACK BOX
®
Power Over Ethernet Switch(PoE) Installation and User Guide
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Dual LEDs indicate operating status of ports may be viewed from any direction,
and are mounted on the top as well as end for convenience. There are power (PWR)
indicators for the unit to validate that the unit is turned ON. For each port, there are Link
and Activity (LK/ACT) LEDs indicating traffic and mounted on the top of the unit,
whereas the end LEDs mounted next to ports indicate (LK/Act) as LA1, LA2, LA3, LA4
for each of the four ports. 10/100 (ON for 100Mbps), and full/half duplex (F/H is ON for
full duplex) indicators for port # 2.
The external DC power plug connector (for optional AC PS) or “jack” is in the
right rear of the chassis (not included with the unit). The internal DC input terminal block is
also provided on the rear side of the unit.
2.5 Frame Buffering and Latency
The Black Box LP004A-Series Power over Ethernet (PoE) Switch are store-and-
forward switches. Each frame (or packet) is loaded into the Switch’s memory and
