HP ProBook 6450b: eSATA support

Hi all!
I'm trying to use an external HDD using his interface, system doesn't seem to notice it, since this drive is detected by my home NAS without any issue.

Code:# lspci -vvv | grep -i 'sata'
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004Code:# rescan-scsi-bus.sh
Scanning SCSI subsystem for new devices
Scanning host 0 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
Scanning for device 0 0 0 0 ...
OLD: Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: SATA SSD Rev: M030
Type: Direct-Access ANSI SCSI revision: 05
Scanning host 1 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
Scanning for device 1 0 0 0 ...
OLD: Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: Hitachi HTS54503 Rev: C60N
Type: Direct-Access ANSI SCSI revision: 05
Scanning host 2 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
Scanning host 3 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
Scanning host 4 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
Scanning host 5 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
0 new or changed device(s) found.
0 remapped or resized device(s) found.
0 device(s) removed.Is the eSATA port maybe controlled by another chip? In the BIOS options it's activated, by the way.
I guess it depends on a missing kernel module.

And yes, that's an external 3.5" HDD, power is provided, as a blue LED confirms.
Thanks in advance!