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This is a KVM / console breakout cable, most commonly used with servers, network appliances, and KVM switches.
A DB-15 (HD15) to VGA + USB + Serial (RS-232) breakout cable.Connector breakdown (matching your photos)1. Large black connector (one end)
DB-15 / HD15 male
This plugs into a server’s KVM / console port (common on Dell, HP, Supermicro, IBM, Cisco, etc.).
2. Blue connector
VGA (DE-15 female)
Carries video output to a monitor.
3. Black USB connector
USB-A female
Provides keyboard and mouse input to the server.
4. Small black 9-pin connector
DB-9 (RS-232 serial)
Used for serial console access (BIOS, BMC, switches, routers).
This single cable gives you:
Video (VGA)
Keyboard/mouse (USB)
Serial console (RS-232)
…from one proprietary KVM port on the device.
Typical use cases:
Rack servers without dedicated rear VGA/USB
Headless servers
Network switches / firewalls
Temporary crash-cart access in a data center
“Server KVM dongle”
“DB15 KVM breakout cable”
“VGA USB Serial console cable”
“Crash cart adapter”
These are not universal. Pinouts differ by vendor.
Generic / unknown brand: $10–$20
OEM-specific (Dell, IBM, Supermicro): $25–$60
New OEM versions can exceed $80

Supermicro CBL-0218L 27-14 Rev B Cable KVM/SUVI 36 Pin to DB9 15 D-Sub and 2 USB
$54.00
$12.00
NEW- 2pk -SuperMicro Power Supply Cables - CBL-0223L - 6ft
$24.99
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