cenmate 704RU 4-Bay RAID External Hard Drive Enclosure User Manual
Modèle : 704RU
1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your cenmate 704RU 4-Bay RAID External Hard Drive Enclosure. Please read this manual thoroughly before using the product to ensure proper functionality and data safety. This enclosure supports up to four 2.5-inch or 3.5-inch SATA HDDs/SSDs.
2. Contenu du colis
- cenmate 4-Bay RAID Enclosure (Model 704RU)
- Adaptateur secteur (CC 12V)
- Câble USB-A vers USB-C
- Câble eSATA
- Screws for 2.5-inch drive installation
- Manuel d'utilisation
3. caractéristiques du produit
- Supports four 2.5-inch or 3.5-inch SATA I/II/III HDDs/SSDs.
- Multiple RAID modes: Normal, RAID 0, RAID 1, RAID 3, RAID 5, RAID 10, Clone, Large, JBOD.
- High-speed data transfer via USB 3.0 (up to 5Gbps) and eSATA.
- Equipped with a cooling fan for optimal heat dissipation.
- Automatic sleep function after 30 minutes of inactivity to reduce power consumption and drive wear.
- Built-in multi-protection features: short-circuit, over-heating, over-current, and over-voltage protection.
- Compatible avec les systèmes d'exploitation Windows, macOS et Linux.
4. Consignes de sécurité
- Assurez-vous que l'adaptateur secteur est correctement branché à une source d'alimentation appropriée.
- N’exposez pas l’appareil à l’eau ou à une humidité excessive.
- Évitez de laisser tomber l'enceinte ou de la soumettre à des chocs violents.
- Do not open the enclosure or attempt repairs yourself. Contact support if service is required.
- Always back up important data before performing any RAID configuration changes, as data loss may occur.
5. Installation du matériel
5.1 Installation des disques durs
- Retirez délicatement les plateaux de disques du boîtier.
- For 3.5-inch HDDs, align the drive with the tray and secure it using the provided screws (if necessary, some trays are screwless).
- For 2.5-inch HDDs/SSDs, place the drive into the tray and secure it with the smaller screws provided.
- Faites glisser les plateaux de disques chargés dans le boîtier jusqu'à ce qu'ils s'enclenchent.

Figure 1: Installation of 2.5-inch and 3.5-inch SATA HDDs and SSDs into the cenmate 4-bay enclosure.
5.2 Connexion à votre ordinateur
- Connect the power adapter to the enclosure's DC 12V input port and then to a power outlet.
- Connect the enclosure to your computer using either the USB-A to USB-C cable or the eSATA cable. Ensure the connection is secure.
- Mettez le boîtier sous tension à l'aide de l'interrupteur d'alimentation.

Figure 2: DC 12V power connection for the enclosure.
6. Configuration RAID
The cenmate 704RU enclosure supports various RAID modes. Changing RAID modes will erase all data on the drives. Always back up your data before making any changes.
6.1 Comprendre les modes RAID
| Mode RAID | Minimum Drives | Description |
|---|---|---|
| Normale | 1 | Each drive operates independently. |
| RAID 0 | 2 | Striping. Data is split across multiple drives for increased performance. No redundancy. |
| RAID 1 | 2 | Mirroring. Data is duplicated across two drives for redundancy. Capacity is limited to the smallest drive. |
| RAID 3 | 3 | Striping with dedicated parity. Similar to RAID 0 but with one drive reserved for parity data. |
| RAID 5 | 3 | Striping with distributed parity. Data and parity information are distributed across all drives. Offers good performance and redundancy. |
| RAID 10 | 4 | Nested RAID (RAID 1+0). Combines mirroring and striping for high performance and redundancy. Requires four drives. |
| Cloner | 2 | Crée une copie exacte d'un disque sur un autre. |
| Grand | 2 | Concatenation (JBOD-like). Drives are combined sequentially to form one large volume. No redundancy. |

Figure 3 : Plusview of RAID storage modes.
6.2 Setting RAID Levels
The RAID mode is set using DIP switches located on the back of the enclosure. Refer to the diagram below for specific switch configurations.
- Éteindre the enclosure and disconnect it from the computer.
- Set the DIP switches to the desired RAID configuration according to the diagram.
- Appuyez et maintenez enfoncé le Réinitialiser bouton pendant 5 secondes.
- Reconnect the power and turn on the enclosure. The new RAID mode will be applied.

Figure 4: DIP switch configurations for RAID levels.
7. Initializing and Formatting Drives
After installing new drives and configuring RAID, the drives must be initialized and formatted before use. This process is typically done through your operating system's Disk Management utility.
- Connectez le boîtier à votre ordinateur et mettez-le sous tension.
- Open Disk Management: Right-click 'This PC' (or 'My Computer'), select 'Manage', then 'Disk Management'.
- Locate the new disk(s) (they may appear as 'Unknown' or 'Not Initialized').
- Right-click the disk and select 'Initialize Disk'. Choose MBR for disks 2TB or less, or GPT for disks larger than 2TB.
- After initialization, right-click the unallocated space and select 'New Simple Volume' to create and format a partition. Follow the wizard to assign a drive letter and format with your preferred file system (e.g., NTFS for Windows).
8. Fonctionnement
8.1 Transfert de données
The enclosure supports USB 3.0 (5Gbps) and eSATA for high-speed data transfer. Connect the appropriate cable to your computer for optimal performance.

Figure 5: High-speed data transfer via USB 3.0/USB-C or eSATA.
8.2 Fonction de mise en veille automatique
The enclosure features an automatic sleep mode. If there is no data activity for 30 minutes, the drives will enter sleep mode to conserve power and extend drive lifespan. Activity will automatically wake the drives.

Figure 6: Automatic sleep function after 30 minutes of inactivity.
8.3 Indicateurs LED
The front panel features LED indicators for each drive bay, providing status information:
- Bleu: Always on, indicates standby mode or power on.
- Rouge: Flashing, indicates data reading or writing activity.
- Violet: Indicates a hard drive problem or error.

Figure 7: LED indicator status meanings.
9. Entretien
9.1 Système de refroidissement
The enclosure includes an integrated cooling fan to maintain optimal operating temperatures for your hard drives, preventing overheating and ensuring stable performance.

Figure 8: Internal cooling fan for heat dissipation.
9.2 Anti-skid Pads
The enclosure is equipped with silicone anti-skid pads on the bottom to provide stability and protect surfaces from scratches.

Figure 9: Silicone anti-skid pads for stability.
10. Dépannage
This section addresses common issues you might encounter with your cenmate 4-Bay RAID Enclosure.
Q1: After connecting a new hard drive, why can't I find it or see a disc letter?
A1: New hard drives must be initialized and formatted before the system can recognize and use them. Refer to Section 7 for detailed steps on initializing and formatting drives in Disk Management.

Figure 10: Troubleshooting steps for drive recognition and RAW format.
Q2 : Le disque dur apparaît au format RAW dans la Gestion des disques en raison d'une extraction incorrecte ou d'une panne de courant. Que dois-je faire ?
A2: You can attempt recovery using the chkdsk Ouvrez l'invite de commandes en tant qu'administrateur et saisissez la commande. chkdsk I: /f (replace 'I' with the actual disc letter of the RAW drive). After scanning and repair, reboot your computer.
Q3: The hard drive is dynamically invalid in Disk Management because it was previously removed from an old computer.
A3: This is a system-related issue. Reinstall the hard drive into its original computer motherboard, back up the data, and then convert it to a basic disk. If the old computer is unavailable, you may need dynamic disk conversion software.

Figure 11: Troubleshooting steps for dynamic invalid drives, missing disc letters, and disconnections.
Q4: Hard drive shows up but has no disc letter?
A4: In Disk Management, right-click on the Disk Partition section and select 'Change Drive Letter and Paths...' to add a drive letter for use.
Q5: The enclosure automatically disconnects during transmission and then reconnects itself after a while?
A5: This could indicate issues with the USB interface on your computer, the USB cable, computer USB drivers, the hard drive itself, or the hard drive enclosure. Systematically check each component. If the problem persists, contact technical support.
11. Spécifications
| Fonctionnalité | Spécification |
|---|---|
| Numéro de modèle | 704RU |
| Marque | cenmate |
| Lecteurs pris en charge | Disque dur/SSD SATA I/II/III 2.5 pouces / 3.5 pouces |
| Nombre de baies | 4 |
| Capacité maximale par lecteur | Jusqu'à 20 To (Total 80 To) |
| Modes RAID | Normal, RAID 0, RAID 1, RAID 3, RAID 5, RAID 10, Clone, Large, JBOD |
| Interface matérielle | USB Type-C (USB 3.0), eSATA |
| Taux de transfert de données | Jusqu'à 5 gigabits par seconde (USB 3.0) |
| Appareils compatibles | Desktop, Personal Computer |
| Systèmes d'exploitation compatibles | Windows, macOS, Linux |
| Matériel | Aluminium |
| Dimensions du produit | 7 x 5 x 7 pouces |
| Poids de l'article | 7.37 livres |
| Alimentation électrique | 12 V CC |

Figure 12: Wide compatibility with various drive types and operating systems.
12. Garantie et assistance
cenmate products typically come with a one-year warranty. For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact cenmate customer support. The manufacturer aims to provide 24/7 quick reply and lifetime product quality support.
For support, please refer to the contact information provided with your product packaging or visit the official cenmate website.





