Here are the full technical specifications and compatibility details for the Colorado Jumbo 350MB Internal Tape Backup Drive, developed by Colorado Memory Systems (later acquired by HP):
🧠 Product Overview: Colorado Jumbo 350

• Manufacturer: Colorado Memory Systems (later acquired by Hewlett-Packard)

• Model Name: Jumbo 350

• Type: Internal Tape Backup Drive

• Storage Capacity: 350MB (uncompressed, QIC-3020 standard)

• Media Type: DC-2120XL/QIC-3020 minicartridge tapes

• Interface: Floppy Disk Controller (FDC) – connects via 34-pin floppy ribbon cable

• Drive Bay Requirement: 5.25″ half-height internal bay

• Power Connector: Standard Molex 4-pin

• Transfer Rate: Approx. 1MB/min (uncompressed)

• Data Compression: None natively, though some backup software supported software compression

• Operating System Compatibility:

  • MS-DOS

  • Windows 3.x

  • Windows 95/98/ME

  • Windows NT 3.51/4.0

  • Some Linux distributions with ftape/QIC drivers (legacy kernel support)

• Software Required: Colorado Backup for DOS/Windows (or third-party software supporting QIC-3020 drives)

🧩 Features & Notes

• Advanced QIC-3020 format, allowing 350MB per cartridge—an upgrade from the QIC-80 and QIC-40 series (120MB/250MB models).

• FDC interface made it highly compatible with systems of the era (1988–1999).

• Can typically coexist with floppy drives if controller supports daisy-chaining.

• Known for reliable build and low failure rate due to few moving parts.

• Supported by backup software like:

  • Norton Backup

  • Colorado Backup

  • Seagate Backup Exec (early versions)

  • Arcserve (legacy builds)

🖥️ Compatible PC Systems

The Jumbo 350 can be installed in any system meeting the following conditions:

✅ System Requirements:

• Free 5.25″ internal bay

• Standard ISA/PCI motherboard with an integrated or add-on floppy disk controller

• BIOS support for legacy tape/floppy interface (standard in 386/486/Pentium-class PCs)

• Available Molex power connector

✅ Example Compatible Systems:

• Compaq Deskpro 486/586/ProLinea series

• IBM Aptiva, PS/1, PS/2 towers

• Gateway 2000 486/Pentium-class PCs

• Dell Dimension P90 – PII era systems

• HP Vectra VL/ES/XP series

• Packard Bell multimedia towers with internal FDC

🔧 Installation & Operation

1. Mount in an open 5.25″ drive bay.

2. Connect to floppy controller via 34-pin cable (may share with floppy drive).

3. Connect to Molex power.

4. Use backup software to initialize and operate the tape mechanism.

5. Insert DC-2120XL/QIC-3020 cartridge to begin backups.