User's Manual

1-12
Chapter 1: Product introduction
3. USB device wake-up (3-pin USBPW5~10)
Setthisjumperto+5VtowakeupthecomputerfromS1sleepmode(CPUstopped,
DRAMrefreshed,systemrunninginlowpowermode)usingtheconnectedUSB
devices.Setto+5VSBtowakeupfromS3andS4sleepmodes(nopowertoCPU,
DRAMinslowrefresh,powersupplyinreducedpowermode).
• TheUSBdevicewake-upfeaturerequiresapowersupplythatcanprovide500mAon
the+5VSBleadforeachUSBport;otherwisethesystemwouldnotpowerup.
• ThetotalcurrentconsumedmustNOTexceedthepowersupplycapability(+5VSB)
whether under normal conditions or in sleep mode.
2. Keyboard and USB device wake-up (3-pin PS2_KBPW1~4)
ThisjumperallowsyoutoenableordisablethekeyboardandUSBdevicewake-up
feature.Whenyousetthisjumpertopins2-3(+5VSB),youcanwakeupthecomputer
bypressingakeyonthekeyboardorusingtheconnectedUSBdevices.Thisfeature
requiresanATXpowersupplythatcansupplyatleast1Aonthe+5VSBlead,anda
correspondingsettingintheBIOS.
B85M-K PLUS
1 2
2 3
+5V
+5VSB
(Default)
B85M-K PLUS Keyboard and USB device wake-up
PS2_USBPW1-4
B85M-K PLUS
21
2 3
+5V
(Default)
+5VSB
USBP5-10
B85M-K PLUS USB device wake-up
E10185_B85M-K_PLUS_Guide.indb 12 2015/2/13 14:25:13