When the Graphics slot in your motherboard is Black is that Pci express 16 orAGP

the slot type doesn't depend on it's colour, e.g. u can have a red PCI-e or and yellow AGP...

just compare your slot to this ones:

Heres what my readout says, not sure if I have a PCIe X16 slot or not.

 

PCI-Express Information : 
Number of PEG connectors : 2

 Bus PCI-Express : 
Device : 82915G/P/PL Grantsdale Host-PCI Express Graphics Bridge
Version : 1.0
Port : 2
Physical Slot : #0
Slot Populated : No
Link Width : x0   (max. x16)
Link Speed : 2.5 GB/s

Heres what my readout says, not sure if I have a PCIe X16 slot or not.

PCI-Express Information :
Number of PEG connectors : 2

Bus PCI-Express :
Device : 82915G/P/PL Grantsdale Host-PCI Express Graphics Bridge
Version : 1.0
Port : 2
Physical Slot : #0
Slot Populated : No
Link Width : x0 (max. x16)
Link Speed : 2.5 GB/s

 

 

Pro_wrestler

PCI Express, without a doubt.