Today we’ll be taking a look at the EnGenius ESR9850 Wireless N Gigabit Router, a wireless router with 4 gigabit ports, haven’t heard of this brand before.
4 screws later and we’re in.
PCB layout looks quite good, we’ve got a ceramic heatsink on the main processor, 2 RF outputs without the metal cans with the antenna cable soldered on, 2x CAT7125CA SMPS up the top right plus a smaller U8AM878 one near the bottom center and a TX/RX unpopulated connector and an 8 pin unpopulated connector – likely JTAG. PCB date code is 2nd week of 2011.
1. Ralink 802.11n Wireless AP/Router SoC
Under the heatsink we’ve got a Ralink SoC running with a 40MHz oscillator. It’s running a 384MHz MIPS24KEc CPU core, has 5-port integrated 10/100 PHY, an USB OTG and a Gigabit Ethernet MAC with support for 64MB SDRAM and 16MB Flash.
RT3052_Brief & RT3052
2. Realtek 5 Port Gigabit PHY
With a 25MHz crystal
RTL8366RB
3. EtronTech 128Mbit SDRAM (x2)
EM639165
4. MX 32Mbit Flash
29LV320DTTI
And that’s all.
You maybe able to run OpenWRT or DD-WRT on it. I think this RT3052F is a supported by both