![]() ![]() Even Intel has backed off on the no-40 MHz-for-you-in-2.4 GHz policy in its original 4965 AGN 11n adapters, allowing it to be enabled in the newer 51 AGNs. You also shouldn’t bother trying to find the setting to enable 40 MHz channel width mode in the 2.4 GHz band-Apple still has it locked out. But two antenna connections per radio says that it’s a dual-stream-only design. Since Marvell keeps details on its devices to itself and its customers, I don’t know anything about these devices. I didn’t take the shield off the radio module, so was only able to see the two Marvell 88W8366 devices visible in the photo. A glance at the bottom of the board revealed a Pericom PI7C9X20303UL PCIe Packet Switch, which I assume helps connect the new radio module to the CPU. Note the big ol’ button-cell battery, I guess to keep info alive in RAM. RAM has been increased from 64 to 128 MB, but flash stayed the same at 16 MB. But Apple’s case design still allows only one WAN and three LAN ports to be exposed, none of which support jumbo frames. The switch is now a Marvell 88E6350R 7 Port Gigabit. The new processor is a Marvell 88F6281 1.2 GHz "Kirkwood", which is a popular choice in current-generation NASes, instead of the 88F5181 in the previous model. This is actually an entirely new board, with an all-Marvell design (processor, switch, radios) and more RAM. Once I got the main board freed from the thermal tape that bonds it to the heat sink blocks, which, in turn, sit on a combination RF shield / heatsink that covers the top of the router, the view shown in Figure 4 was revealed.įigure 2: New Airport Extreme Simultaneous board The previous article showed that the previous Extreme used two Atheros single-chip N radios: an AR9220 dual-band, 2×2 for 5 GHz and an AR9223 single-band, 2×2 for 2.4 GHz on a mini-PCI module. I was also wrong in my guess that Apple just slipped a new radio module into the old dual-radio Extreme. And since three-stream routers require three transmit and receive chains, the new Extreme won’t be getting a three-stream upgrade sometime in the future.įigure 1: Inside the new Airport Extreme Simultaneous Figure 1 shows only four antennas, which makes two per radio. So I broke down and bought the new MC340LL/A model to see for myself and ended up disappointed on multiple counts.Īs soon as I cracked the case, I knew that my three-stream guess was wrong. ![]() But my curiousity about whether Apple was performing a stealth seeding of three-stream routers in the the wild got the better of me. Well, it turns out that Apple never even responded to my review request this time. Introduction Update : Added link to follow-up article ![]()
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