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Internal Details

Opening the WZR's case reveals a clean, simple design, based on a Broadcom BCM4704 processor, which is a suped-up version of the BCM4702 used in earlier Buffalo products. The dual-dipole antennas are on a board seen on the left hand side of Figure 2, which puts them at the top of the case when the product is normally positioned on a desk or shelf.

BuffaloTech WZR-RS-G54: Case Open

Figure 2: Case open
(click image for larger view)

Figure 3 shows the same side of the board, but with the antenna and main boards removed from the case. The pad pattern in the empty space to the left of the processor looks to me like it's set up for a second mini-PCI connector, so it appears that the board could also be used in a dual-radio product.

BuffaloTech WZR-RS-G54: Board - Processor side

Figure 3: Board - Processor side
(click image for larger view)

Figure 4 reveals the hiding spot for the Broadcom-based Buffalo WLI-MPCI-G54 mini-PCI radio, which has been used in other Buffalo designs and is essentially a copy of the Broadcom reference design. You can also see the Broadcom BCM5325 5/6 Port 10/100 switch that handles LAN (and radio) switching duties.

BuffaloTech WZR-RS-G54: Board - Radio side

Figure 4: Board - Radio side
(click image for larger view)

Rounding out the design are 64 MBytes of RAM, 8 MBytes of Flash and an Altima (Broadcom) AC101L 10/100 Ethernet Tranceiver for the WAN port.

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