Agp Pro Universal Slot
Compatibility of an Accelerated Graphics Port (AGP) slot on a motherboard and AGP video cards depends on the following factors:
AGP (Accelerated Graphics Port) was the commonly used type of graphic card during the 2000s. Later, it got replaced by the PCI express card. AGP cards are attached to the main board in a particular slot; with some extra high data transfer rate. A)agp pro 3.3v b)agp pro 1.5v c)agp pro universal. The slot is much larger than the modern agp slot and wont accept any of the latest agp cards. 2.A.G.P universal.this is the same size as the newer agp but has no divide in the slot,very rare and hardely used. AGP Pro cards will not fit into standard slots, but standard AGP cards will work in a Pro slot. Motherboards equipped with a Universal AGP Pro slot will accept a 1.5 V or 3.3 V card in either the AGP Pro or standard AGP configuration, a Universal AGP card, or a Universal AGP Pro card.
- Speed is always backwards compatible
- Signaling voltages can be incompatible
- Connectors and slots are keyed so that you can only use electricallycompatible equipment
AGP Speeds
Speed of an AGP bus is always backwards compatible. For example, a 4xdevice must be able to run at 2x and 1x.No compatibility issues here.
AGP Signaling Voltages
Both the AGP slot on the motherboard and AGP video card must signal atthe same voltage to function. Different speeds requiredifferent signaling voltages for operation. For example, AGP 8x signals at 0.8V, while AGP 1x can signalat 1.5V or 3.3V. Physical keys in the connector and slot dictate whichsignaling voltages the devices is capable of operating at.| Speed | Signaling Voltage |
|---|---|
| 1x/2x | 1.5V or 3.3V |
| 4x | 0.8V or 1.5V |
| 8x | 0.8V |
AGP Slot and Connector Keying
AGP connectors and slots are physically keyed to specify the signalingvoltages the device is capable of operating at.AGP specifies two keys, a 3.3V key and a 1.5V key. Unfortunately they added a third voltage, 0.8V. If a deviceoperates at 0.8V it uses the 1.5V key and must be tolerant of 1.5V signaling, but not necessarily capable ofoperating at 1.5V. A key is manifested as a raised area in a femaleconnector or slot and a gap or absence of pins ina male connector. The keys physically prevent an electricallyincompatible AGP video card from being inserted into an AGP slot.If a device has the 1.5V key and claims operation at 8x speed you know that it is capable of 0.8V operation.
AGP Connector Keying
AGP Pro
AGP Pro is a extension to the standard AGP connector and slot on bothsides to provide additional power to an AGP card.It comes in two flavors, AGP Pro110 provides for 50-110W of powerand requires two adjacent PCI slots for cooling. AGP Pro50 provides for20-50W of power and requires a single adjacent PCI slot for cooling.
An AGP Pro video card will not work in an AGP slot.
An AGP video card will work in an AGP Pro slot, however the card must havea registration tab.
Agp Pro Universal Slot Parts
AGP Pro Slot
Agp Pro Universal Slot Remotes
AGP Registration Tab