Motorola GKN6266A is a Power Supply Cable (for GPN6145 and HPN4007/8).

 Cable connecting power supply units GPN6145 and HPN4007, HPN4008 with base Motorola radios.
Motorola GKN6266A connecting cable is used for Motorola radios::
CDM1250 CDM1550 CDM1550LS CDM1550LS+ CDM750 CM140 CM160 CM200 CM300 CM340 CM360 DGM4100 DGM4100 DGM4100+ DGM4100+ DGM6100 DGM6100 DGM610 0+, DGM6100+, DM1400, DM1600, DM2600, DM3400, DM3401, DM3600, DM3601,DM4400,DM4400e,DM4401,DM4401e,DM4600,DM4600e,DM4601,DM4601e,EM200,EM400,GM1200,GM1280,GM300,GM3188,GM3189,GM338,GM3 39, GM340, GM350, GM360, GM3688, GM3689, GM380, GM398, GM399, GM600, GM640, GM660, GM950, MCX600, MCX700, MCX760, MCX780, PM400, PRO3100, PRO5100, PRO7100, TETRA MTM5400, MTM700, TETRA MTM800 Enhanced, XiR M8220, XiR M822 8, XiR M8260, XiR M8268, XiR M8620, XiR M8628, XiR M8660, XiR M8668, XPR4300, XPR4350, XPR4500, XPR4550, XPR5350, XPR5550