🔌 Dell 30‑Pin USB/Data Cable (for Latitude ST, Latitude 10 ST2/ST2e, XPS 10, Streak 10 Pro)
 
(USB Type‑A Male ↔ Dell 30‑Pin Wide Tablet Plug)

This cable was Dell’s solution for combining data sync and charging/docking into a single proprietary port on its early Windows and Android tablets.
 
🔧 Cable Form
USB Type‑A male (host side)
Dell 30‑pin wide proprietary plug (tablet side)
Length: 3FT
Often branded as Dell part numbers like 0X9RG3, 0J9H11, 331‑9317
 
🖥️ Compatible Devices
Dell Latitude ST (Slate Tablet, Windows 7)
Dell Latitude 10 (ST2, ST2e, Windows 8)
Dell XPS 10 (Windows RT)
Dell Streak 10 Pro (Android, select regions)
 
✅ Common Uses
🔋 Charging the tablet via USB (slower than the 19V AC adapter, but works for trickle charging or sync cradles)
🔄 Data sync between tablet and PC (file transfer, firmware updates, device management)
🧩 Docking station interface — the same 30‑pin port was used for Dell’s docking accessories
🧪 Peripheral connection — some docks exposed HDMI, Ethernet, and USB passthrough via this port
 
🧠 Signal Format
⚡ USB 2.0 data lines (D+/D‑)
🔌 Power pins (5V USB charging, limited current)
🧠 Additional pins reserved for docking station I/O (video, Ethernet, etc.)
📏 30‑pin layout similar in concept to Apple’s 30‑pin, but electrically different and not interchangeable
 
⚠️ Things to Watch Out For
📉 Not interchangeable with Apple 30‑pin cables — different pinout and keying
🔌 USB charging is limited — full‑speed charging requires the 19V AC adapter
🧯 Aftermarket cables exist, but OEM Dell cables are more reliable for data sync
📏 Some models (Latitude 10 ST2/ST2e) only trickle‑charge via USB; they need the AC adapter for full charging
 
🛠️ Quick Tips for Beginners
🧭 Identify your tablet model (ST, ST2, ST2e, XPS 10, Streak 10 Pro) before sourcing the cable
🔌 Use the 19V AC adapter for daily charging; keep the USB cable for sync and light charging
🧪 If using a dock, the same 30‑pin port is used — the cable can double as a dock connector
🧯 Label this cable clearly — it looks similar to Apple’s 30‑pin but is Dell‑specific