PR21555AB Overview
The 304-BBGA package contains it. It should be able to operate on a 3V ~ 3.6VV power supply. The - series includes this electrical component. It has a pin count of 304 on it.
PR21555AB Features

PR21555AB Applications
There are a lot of Intel
PR21555AB Controllers Interface ICs applications.

Desktop PCs
Notebook PCs
Notebook Docking stations
LAN Servers
PC Motherboards
0 to 10V Dimming Luminaires
Dimmable LED Power Supply
Dimming Control Devices
Commercial LED Lighting
Smart LED Lighting

Mounting Type	Surface Mount
Package / Case	304-BBGA
Supplier Device Package	304-PBGA (31x31)
Supplier Package	BGA
Category	Non-Transparent PCI-to-PCI Bridge
Mounting	Surface Mount
Package	Bulk
Mfr	Intel
Product Status	Active
Series	-
Type	Non-Transparent PCI-to-PCI Bridge
Applications	PCI-to-PCI Bridge
Voltage - Supply	3V ~ 3.6V
Pin Count	304
Interface	JTAG, PCI