Dell sold this model as an "entry level" PC. 512MB Memory max, PIII, etc.
It does have a PCI bus and a low power PCI video card MAY work. The manual states you have to remove the power supply to install any PCI cards. Product Support | Dell US
From the manual:
Bus types PCI (version 2.2)
Bus speed PCI: 33 MHz
PCI connectors supports four three-quarter–length cards
PCI connector size 120 pins
PCI connector data width
lists some PCI cards, I suspect you need a "low Profile" type, along with a low power card.