Can They Ship This One?
Updated 9/4/2008: Added info on USB "SharePort" functions
Figure 1: D-Link DIR-825 Xtreme N Dual Band Gigabit Router
D-Link appears to be taking another run at getting a toehold in the simultaneous dual-band draft 802.11n router market, which is currently dominated by Linksys' WRT600N [reviewed] and WRT610N [reviewed]. The DIR-825 quietly appeared on D-Link's website last week and could be the replacement for the company's troubled and much-delayed DIR-855 [reviewed], which is still in short supply.
Figure 2 shows the inside of the 825. Although the fuzzy FCC pictures are a bit hard to make out, you can see a layout that looks very similar to the DIR-855's, with two mini-PCI radio boards stacked together. The boards appear to have three antenna terminals, but only two are cabled out to external antennas attached via RP-SMA connectors.
Figure 2: DIR-825 inside view
In fact, a closer look at the FCC photos turns up a "DGL-4500" marking on the board (Figure 3).
Figure 3: "DGL-4500" marking on main board
You can definitely see the family resemblance between the 825 and 855's boards in Figures 4 and 5.
Figure 4: FCC photo of DIR-825 main board
Component close-up photos in the FCC ID docs were nice enough to clearly show that the 825 uses a Ubicom IP5170U clocked at 350 MHz—same as used in the 855. But the switch is different, with the 825 using a Realtek RTL8366SR gigabit switch, instead of the Realtek RTL8356 in the 855. The single PSC A2S28D40CTP memory chip provides 16 MB of DDR RAM.