Wireless router with detachable antenna, upgradable with OpenWrt. Follow the instructions on the OpenWrt wiki.

This is the recipe for installing OpenWrt from trunk (BARRIER BREAKER, Bleeding Edge, r39638):

1. Factory reset the router
2. Download the *-factory.bin firmware image.
3. Use the original web-based procedure to upgrade the firmware, upload the above image.
4. Connect with telenet 192.168.1.1 and set the root password.
5. Connect with ssh root@192.168.1.1

<code> cat /proc/cpuinfo system type : Atheros AR9330 rev 1 machine : TP-LINK TL-WR741ND v4 processor : 0 cpu model : MIPS 24Kc V7.4 BogoMIPS : 265.42 wait instruction : yes microsecond timers : yes tlb_entries : 16 extra interrupt vector : yes hardware watchpoint : yes, count: 4, address/irw mask: [0x0000, 0x0900, 0x0120, 0x0088] isa : mips1 mips2 mips32r1 mips32r2 ASEs implemented : mips16 shadow register sets : 1 kscratch registers : 0 core : 0 VCED exceptions : not available VCEI exceptions : not available <code>