What is the pin size of the 12V power adapter?
DVR4-4480G, DVR4-4480RN, DVR4-4480V, DVR4-4580G, DVR4-4580RN, DVR4-4580V, DVR4-4680, DVR4-4680RN, DVR4-4685, DVR4-4685RN, DVR4-4780V, DVR4-4980V, DVR4-5580, DVR4-5580G, DVR4-5580RN, DVR4-5680, DVR4-5680RN, DVR8-4480G, DVR8-4480RN, DVR8-4480V, DVR8-4580G, DVR8-4580RN, DVR8-4580V, DVR8-4680, DVR8-4680A, DVR8-4680RN, DVR8-4685, DVR8-4685RN, DVR8-4780V, DVR8-4880RN, DVR8-4980, DVR8-5580, DVR8-5580A, DVR8-5580G, DVR8-5580RN, DVR8-5580RU, DVR8-5680, DVR8-5680A, DVR8-5680RN, DVR8-5680RU, DVR8-5880RU, DVR16-4580G, DVR16-4580RN, DVR16-4580V, DVR16-4680, DVR16-4680A, DVR16-4680RN, DVR16-4680RU, DVR16-4880RU, DVR16-4980, DVR16-5580, DVR16-5580G, DVR16-5580G2, DVR16-5580RU, DVR4-4680XN, DVR4-4680XU, DVR4-5680XN, DVR8-4680X, DVR8-4680XN, DVR8-4680XU, DVR8-5680X, DVR8-5680XU, DVR4-1590, DVR8-1590, DVR4-1600, DVR8-1600, DVR4-4480, DVR8-4480, DVR4-4575, DVR8-4575, DVR16-4575, DVR4-4580, DVR8-4580, DVR4-4780, DVR8-4780, DVR4-4980, DVR8-4980, DVR16-1000, DVR4-1250, DVR8-1250, DVR4-1260, DVR8-1260, DVR4-1425, DVR8-1425, DVR9-1425, DVR12-1425, DVR16-1425, DVR8-1450, DVR4-1580, DVR8-1580, DVR4-2555, DVR8-2555, DVR8-2900, DVR4-3000, DVR8-3000, DVR16-3000, DVR8-3200, DVR16-3200, DVR4-3250, DVR8-3250, DVR16-3250, DVR8-3260, DVR4-3425, DVR8-3425, DVR16-3425, DVR4-3450, DVR8-3450, DVR4-4000, DVR8-4000, DVR16-4000, DVR4-4100, DVR8-4100, DVR4-4150, DVR4-4200, DVR8-4200, DVR9-4200, DVR16-4200, DVR4-4400, DVR8-4400, DVR16-4400, DVR4-4550, DVR8-4550, DVR16-4550, DVR4-4600, DVR8-4600, DVR4-4750, DVR8-4750, DVR8-5000, HDR6-8000, HDR6-8100, HDR4-8200, DVR4-1500, DVR8-1500, DVR16-1500, DVR4-1525, DVR8-1525, DVR4-1550, DVR8-1550, DVR16-1550, DVR8-1575, DVR4-4350, DVR8-4350, DVR4-4500, DVR8-4500, DVR16-4500, DVR8-4900, DVR8-8050, DVR8-8075, HDR8-8050, HDR8-8200
Pin size of the 12V power adapter is 5.5 mm outer diameter, 2.1 mm inner diameter.