• 1 × D25 4TB Internal CCTV Surveillance Hard Disk
• Warranty Card with 2-Year Carry-In Replacement Warranty
• Anti-Static Protective Packaging
• WeKart Online Store Purchase Invoice (GST included)

⚠️ SATA data cable and power cable are NOT included — use the cables available inside your DVR/NVR unit.

• Hikvision DVR & NVR — all standard SATA models
• CP Plus DVR & NVR — all standard SATA models
• Dahua DVR & NVR — all standard SATA models
• TP-Link VIGI NVR series
• UNV / Uniview DVR & NVR
• Zicom DVR & NVR recorders
• Godrej Security DVR & NVR
• Secureye DVR & NVR recorders
• Qubo Smart CCTV NVR
• TVT DVR & NVR series
• Sparsh CCTV DVR & NVR
• All CCTV DVR/NVR recorders with SATA HDD bay (4-ch, 8-ch, 16-ch, 32-ch)

• Home CCTV security recording systems
• Office and corporate security surveillance
• Retail shop and showroom CCTV monitoring
• Warehouse and logistics area surveillance
• Factory and industrial security installations
• Apartment and housing society CCTV systems
• School, college, and hospital security cameras
• Parking area and perimeter monitoring
• Large commercial and multi-site security installations
• DVR or NVR storage upgrade or direct replacement

• Home owners with multi-camera CCTV systems needing extended storage
• Shop and business owners requiring large-capacity surveillance storage
• IT administrators managing large office or commercial CCTV networks
• CCTV installers and security system technicians upgrading storage
• Anyone upgrading from a smaller capacity drive (1TB, 2TB, or 3TB) to 4TB
• Anyone whose existing DVR or NVR hard disk has failed and needs replacement
• Warehouse, factory, and logistics managers requiring weeks of footage history
• Apartment, school, and hospital security administrators
• Anyone setting up a 16-channel or 32-channel DVR/NVR with high-capacity needs

Follow these steps to safely install the D25 4TB hard disk in your CCTV DVR or NVR unit.

1. 1
   Power off the DVR/NVR completely — switch off the unit and disconnect the power adapter from the wall socket. Never install a hard disk while the device is powered on.
2. 2
   Open the DVR/NVR casing — unscrew the top or side panel using a Phillips screwdriver and keep the screws safely aside.
3. 3
   Locate the hard disk bay — find the SATA connector slots and HDD mounting tray or bracket inside the unit.
4. 4
   Mount the hard disk — place the D25 4TB drive into the tray with screw holes aligned and secure it firmly with mounting screws.
5. 5
   Connect the SATA data cable — plug one end into the hard disk SATA data port and the other into the SATA port on the DVR/NVR mainboard.
6. 6
   Connect the SATA power cable — attach the SATA power connector from the DVR/NVR power supply to the power port on the hard disk.
7. 7
   Close the casing — reattach the panel and tighten all screws securely.
8. 8
   Power on the DVR/NVR — the unit will automatically detect the new hard disk on startup.
9. 9
   Format from the DVR/NVR menu — navigate to Storage Settings → HDD Management → Format. This step is mandatory before recording begins. Formatting will erase all existing data on the drive.
10. 10
    Recording starts automatically — once formatting is complete, the DVR/NVR begins recording as per your configured schedule and settings.

The D25 4TB hard disk can also be used as secondary storage in a desktop PC. Follow these steps for installation.

1. 1
   Shut down the computer and disconnect power — fully power off and unplug the power cable from the PC case.
2. 2
   Open the PC cabinet — remove the side panel by unscrewing the rear thumb screws or panel screws.
3. 3
   Find an available 3.5 inch drive bay — locate an empty bay inside the cabinet suitable for a 3.5 inch SATA hard disk.
4. 4
   Slide in and secure the hard disk — insert the D25 drive into the bay with SATA ports facing inward and secure with screws on both sides.
5. 5
   Connect the SATA data cable — plug one end into the hard disk and the other end into an available SATA port on the motherboard.
6. 6
   Connect the SATA power cable — attach a SATA power connector from the PSU to the power port on the hard disk.
7. 7
   Close the cabinet and reconnect power — reattach the side panel, plug in the power cable, and power on the computer.
8. 8
   Initialise in Windows Disk Management — right-click Start → select Disk Management. The drive appears as unallocated. Right-click → Initialise Disk → select GPT (required for drives above 2TB) → create a New Simple Volume and format as NTFS.
9. 9
   Assign a drive letter — assign a letter (e.g. D: or E:) during volume creation. The drive is now ready to use as additional storage.

• This is an internal hard disk — requires installation inside a DVR, NVR, or desktop computer.
• Not an external portable USB hard disk — no USB connectivity.
• Always format from the DVR/NVR menu before first use in a surveillance system.
• Actual usable storage is slightly less than 4TB due to formatting overhead.
• For desktop PC use — select GPT partition style during Windows Disk Management initialisation. MBR does not support drives larger than 2TB.
• Uses SATA interface only — not compatible with older IDE/PATA connectors.
• SATA data cable, power cable, and mounting screws are not included in the box.
• Handle carefully — avoid drops, vibrations, magnetic fields, and moisture.
• Designed for standard indoor operating temperature environments.
• Not recommended as a primary OS boot drive for desktop computers.