I have built a PC online, and im not sure if i have a USB port. It does not have the option of adding any, so does that mean that most PCs come with USB ports by default? ATI Radeon HD4670, 512 MB, 128 Bit, PCIe x16 v2.0 Microsoft Windows 7 Home Premium 64-Bit AMD Phenom II X2 550 Black Edition2x 3100 MHz, 2x 512 kB, 4000 MT/s, Callisto Cooler Master ExtremePower 400 Watt, ATX 2.03, ATX12V 2.0, 4 x, 5 x ASRock A780LM-S AMD 760G, 5.200 MT/s, Onboard, 1x PCIe x16 v2.0, Socket AM2+ GeiL 4 GB DDR2-800 Kit 4096 MB, CL5 5-5-15, 2 stuk(s), PC2 6400 Western Digital WD3200AAJS 320 GB, 8,9 / 8 / 7200, € 0,12*, Serial ATA/300 Samsung SH-D162D 16 / 48 speed, Ultra DMA/33, 100 / 90 ms
the first word in his post answered your question, and yeah loony is right, you need to get a better power suply.
SOOO.... I dont need to add anything. Just out of curiosity, where are the usb ports located then? On the motherboard? And if i upgraded the power to 500 watt?
there will be some on the motherboard (usually 4-6) and possibly some on the front of the case wattage isnt the only criteria that determines if a powersupply is any good or not, you need to work out the 12V amps draw and make sure the power supply can supply that. (generally look up the required amperage for the graphics card and make sure the PSU can supply at least 10A more).
