User guide

BLACK BOX
®
Series Convenient Switches Installation and User Guide
17
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 or “jack” is in the right rear of the chassis.
The internal DC input terminal block is also provided on the rear side of the unit.
Port #2 has the capability to configure that port as “FF” Full-Fixed for connecting
the 100Mb Full Duplex ports, or “A” to connect with an auto-negotiating port. Port #2 is
controlled by the manually-selectable slide-switch (FF-A), mounted underneath the port.
Use care in changing the switch position as the switch is small and fragile. See section 4.4.
2.4 Frame Buffering and Latency
The Black Box LBH101A-Series Convenient Switches are store-and-forward
switches. Each frame (or packet) is loaded into the Switch’s memory and inspected before