DC Cable is the Cable used for the products with DC (direct current) output like all AC/DC adapters including laptop Adapter, desktop adapter, wall plug adapter, Printer Adapter, and Linear Adapter and so on. The one end of dc cord is 2 or 3 open wires to connect with adapters or chargers, the other end of DC Power Cable is different dc jack, standard dc jacks for laptop adapter are 5.5*2.5, 5.5*2.1, 5.5*1.7, 4.8*1.7, 4.0*1.7, 3.5*1.35, , 3.0*1.0, 2.5*0.7, 2.0*0.6, 4.0*1.35, 6.3*3.0, 5.5*3.0 with pin, 7.4*5.0 with pin, 6.5*4.4 with pin, 4.5*3.0 with pin, 4 pin, 4 hole, 5 hole oval, 3 pin, 3 hole, etc, and standard dc jacks for tablet are 2.5*0.7, 3.0*1.0, 2.0*0.6, micro usb, and mini usb, etc.
Except dc jack, three main specifications are OD of cable, length of cable and materials specifications inside of cable. OD means outer diameter, it is normally 3.5mm for wall plug adapter, 4.0mm, 4.5mm, 5.0mm, 5.5mm for big power laptop adapter and other ac/dc adapter. Length is normally 1.2m, 1.5m, and 1.8m, also 2m, 3m, 5m are customized produce. The materials inside are pure copper, CCA ( copper and Aluminum) and CCS (copper and steel), pure copper is the best, CCA is second, CCS is the lowest, yidashun never uses CCS; And the thickness for the materials inside are normally 0.15mm2, 0.19mm2, 0.2mm2, 0.33mm2, 0.41mm2, 0.5mm2, 0.75mm2, 1mm2, 1.25mm2, 1.5mm2, 2mm2 and so on. Normally we use 0.15mm2 and 0.2mm2 for below 30W adapter, 0.41mm2 and 0.5mm2 for below 90W adapter, and 0.75mm2 and more thickness for above 90W adapter.