Silicon Graphics Origin 3900 User Manual page 122

7: R-brick
96
The R-brick has the following features:
• An SGI custom-designed router ASIC, which is an eight-port crossbar that connects
any input-link channel to any of the seven possible output-link channels (see
Figure 7-2). The NUMAlink channels operate at 1.6 GB/s (each direction).
• One USB port for system controller support.
• One L1 controller and LCD display.
• Two hot-pluggable cooling fans.
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