Amazon.com: Seagate ST3500630A 500GB 7200 RPM IDE HDD : Electronics
Unitek IDE/SATA to USB C 3.0 Adapter, Universal IDE Hard Drive Little Triangle pro Converter for 2.5"/3.5" Inch IDE and SATA External HDD/SSD, Support 10TB - Walmart.com
500GB 3.5" Used and tested IDE hard drive. 30 day warranty. Various Manufacturers.
9BJ046-501 - Seagate BarraCuda 7200.10 Series 500GB 7200RPM IDE Ultra ATA/100 (ATA-6) 16MB Cache (CE) 3.5-Inch Hard Drive
Western Digital WD5000AAKB-00H8A0 - 500GB 7.2K RPM IDE 3.5" Hard Disk Drive (HDD) - CPU Medics
WESTERN DIGITAL BLURE WD5000AAKB 500GB 7200RPM IDE HDD
FYI: New WD 500gb IDE HDD $40/amazon prime : r/originalxbox