Assuming it FITS, the POWER should be fine as it's a pretty low-powered card.
The instructions VARY depending on whether you have onboard graphics or are replacing another addon card.
1. Uninstall any previous graphics drivers (AMD, NVidia, or Intel)
2. Shut down PC
3. *If ONBOARD graphics, boot into BIOS and change BOOT ORDER so PCIe is before the onboard (i.e. "iGPU) graphics
4. Install the HD4350
5. Boot into Windows
6. Go to www.amd.com and get the drivers (download and run the autodetect tool if in doubt. It can autoinstall drivers)
What are you "upgrading" from? The HD4350 is really low-end so if your current graphics work why are you bothering?
Yeah, Dell's image for the computer shows a video card in the slot, so it was probably possible to customize it with that when buying it, which means they made sure the power supply was adequate. Also, after I did a little searching, it seems like all hd 4350s are low-profile-ready. If you're currently using intel chipset, that's the onboard video, so there won't be an old card to remove.
Which means there's already an empty slot in there for the graphics card. No graphics card was actually ever installed when I bought it, right
Yes if you had integrated graphics, there is not graphics card in the system. It was running off motherboard graphics....what to do
-Boot up, go to device manage and uninstall display drivers, Power down your system
-Take the case off and insert the new graphics card in the appropriate place
-Boot computer up and install new graphics drivers.