Description:
Universal 32-bit PCI card/media bay combo provides front panel USB, FireWire, and card reader support to all G4 tower models (QuickSilver bezel & MDD door tab not pictured.) Perplexingly the PCI card contains neither USB nor FireWire interfaces, only hubs which require external loopback cables.
Identifying Numbers:
Sweet Multiport; PCA: 1020970-002-A; FAB: 630-1213-000 REV: B; Sweet Hub; PCA: 1020952-001-A; FAB: 630-1211-000 REV: C; Sweet Front Panel Board
Onboard logic:
NEC D720112GK 0341K3008; TI 36A4NVT TSB41LV06A; SST 39VF010 70-4C-NH 0342078-G; Genesys Logic GL816 0316MGAYP-12
PDF: Installation Guide

Description:
PowerMac G5 internal modem card provides one external 8-pin serial port in place of conventional modem. Designed to fit the original Power Mac G5's modem slot, also used on the subsequent June 2004 model.
Identifying Numbers:
G5 Stealth Serial Port REV:B; PCA: 1020715-002-A
Onboard logic:
NS TM23AC DS8925M

Description:
PowerMac G5 internal modem card provides one external 8-pin serial port in place of conventional modem. Designed to fit the revised Power Mac G5 modem slots (Late 2004 and Early 2005 models.)
Identifying Numbers:
G5 V2 Stealth Serial Port REV A
Onboard logic:
NS TM23AB DS8925M