Schematic by Stal-Ker
According to ExtUSB compatibility list, this headset should be compatible with following hardware (UNTESTED):
HTC MTeoR, S310, S710, S711, S730, S720, 5800, S620, S621, S630, X7510, X7501, X7500, Touch Cruise P3650, Touch Find, P3300, P3350, Touch P3452, Touch P3450, Touch P3050, Touch Dual P5500, HTC Touch Dual P5310, HTC Touch Dual US, P3470, P3400, P3401, P3400i, TyTN II P4550, TyTN P4500, P4350, P3600, P3600i, P6300, P6500, P4000, P3451, S640, Touch Diamond P3700, Touch Diamond P3700 US, Touch Diamond P3702, Touch Diamond P3100, HTC Touch Pro, Touch Pro CDMA, Touch Viva, Max 4G
Dopod 595, 310, C500, C720W, C730W, U1000, P860, P800W, P800, M700, D802, S1 Enhanced Version, S1, S500, S600, P660, D600, 838 Pro, CHT 9000, C800, C858, CHT 9100, D810, E616, D818c, E860c, C750, S900
i-Mate SP JAS, JASJAM
Qtek 8600, G200, 9600
O2 XDA Atmos, XDA Cosmo, XDA Orbit 2, XDA Orbit, XDA Nova, Ted Baker Needle, XDA Star, XDA Stellar, XDA Trion, XDA Terra, XDA Argon, XDA Mantle, XDA Ignito, O2 XDA Serra
T-Mobile MDA Mail, DASH, MDA Ameo, MDA Compact III, MDA Touch 256, MDA Touch, MDA Touch Plus, MDA Vario III, MDA Vario II, Wing US, Shadow, MDA Compact IV, MDA Vario IV
Vodafone v1415, VDA V, VPA Touch, VPA Compact V, v1615, v1605, VPA Compact IV, VPA Compact GPS, 920
Orange SPV C700, SPV C100, SPV E650, SPV E600, M650, SPV M3100, SPV M700
AT&T Tilt 8925, 8900, Fuze
Cingular 8525
Verizon XV5800, SMT 5800, XV 6900 Touch, XV6800, Touch Diamond
Telus Touch
Bell HTC 5800, 6800, Touch
Alltel Touch, PPC 6800
Sprint Touch, Mogul PPC 6800
Swisscom XPA v1405, XPA1605, XPA1510
EMobile S11HT Emonster
NTT DoCoMo FOMA HT1100, hTc Z, HT-01A
Softbank X03HT, X02HT, X01HT, X04HT, X05HT