diff --git a/share/man/man4/aac.4 b/share/man/man4/aac.4
index 2e598b5e02da..442511703000 100644
--- a/share/man/man4/aac.4
+++ b/share/man/man4/aac.4
@@ -30,24 +30,24 @@
 .Nm aac
 .Nd Adaptec AdvancedRAID Controller driver
 .Sh SYNOPSIS
-.Cd options AAC_COMPAT_LINUX
 .Cd options AAC_DEBUG=N
 .Cd device pci
 .Cd device aac
+.Cd device aacp
 .Sh DESCRIPTION
 The
 .Nm
-driver provides support for the Adaptec AAC family SCSI Ultra2 and Ultra160
-RAID controllers.
-These controllers support RAID 0, 1, 5, 10, and volume sets.
-They have four channels in the add-in version
-or 1-2 channels in the motherboard integrated version,
-and are most often found relabeled by Dell or Hewlett-Packard.
+driver provides support for the Adaptec AAC family of SCSI Ultra2, Ultra160,
+and Ultra320 RAID controllers.
 Supported controllers include:
 .Bl -bullet
 .It
 AAC-364
 .It
+Adaptec SCSI RAID 2120S
+.It
+Adaptec SCSI RAID 2200S
+.It
 Adaptec SCSI RAID 5400S
 .It
 HP NetRAID 4M
@@ -69,7 +69,7 @@ unless they are part of a container or volume set,
 and non-fixed disks cannot be accessed.
 Containers can be configured by using
 either the on-board BIOS utility of the card,
-or a Linux-based management application.
+or a command-line interface management application.
 .Pp
 The
 .Pa /dev/aac?
@@ -81,11 +81,20 @@ and
 .Pa /dev/hpn?
 exist for the Dell and HP flavors, respectively, and are required for
 the CLI management utility available from these vendors to work.
-Compiling the driver with the
-.Dv AAC_COMPAT_LINUX
-option enables the Linux-compatible
+If the kernel is compiled with the
+.Dv COMPAT_LINUX
+option, or the aac_linux.ko and linux.ko modules are loaded, the
+Linux-compatible
 .Xr ioctl 2
-interface for the management device.
+interface for the management device will be enabled and will allow
+Linux-based management applications to control the card.
+.Pp
+The
+.Cd aacp
+device enables the SCSI pass-thru interface and allows devices connected
+to the card such as cdroms to be available via the CAM
+.Xr scsi 4
+subsystem.  Note that not all cards allow this interface to be enabled.
 .Ss Tuning
 The read-only sysctl
 .Va hw.aac.iosize_max
@@ -126,6 +135,7 @@ and are also queued for retrieval by a management application.
 .Sh SEE ALSO
 .Xr kld 4 ,
 .Xr linux 4 ,
+.Xr scsi 4 ,
 .Xr kldload 8 ,
 .Xr loader 8 ,
 .Xr sysctl 8
@@ -140,13 +150,10 @@ driver first appeared in
 .An Scott Long
 .Aq scottl@FreeBSD.org
 .Sh BUGS
-This driver is not compatible with controllers that have version 1.x firmware.
+This driver is not compatible with Dell controllers that have version 1.x
+firmware.
 The firmware version is the same as the kernel version printed in the BIOS
 POST and driver attach messages.
 .Pp
-This driver will not work on systems with more than 4GB of memory.
-.Pp
 The controller is not actually paused on suspend/resume.
 .Pp
-Unloading driver is not supported at this time.
-.Pp