diff --git a/release/doc/en_US.ISO8859-1/hardware/alpha/proc-alpha.sgml b/release/doc/en_US.ISO8859-1/hardware/alpha/proc-alpha.sgml
index d9299ba8e19..96a885f3c01 100644
--- a/release/doc/en_US.ISO8859-1/hardware/alpha/proc-alpha.sgml
+++ b/release/doc/en_US.ISO8859-1/hardware/alpha/proc-alpha.sgml
@@ -2738,6 +2738,85 @@ cpu EV5
file. The cpu EV5 is mandatory to keep
&man.config.8; happy.
+
+
+ Compaq AlphaServer ES40 (<quote>Clipper</quote>)
+
+ The ES40 is a SMP system that can have 1 - 4 21264 Alpha CPUs.
+ With the maximum configuration of 32GB of memory these systems are
+ often deployed as heavy database servers and are also found in HPTC
+ compute farm environments.
+
+ Features:
+
+
+ 21264 Alpha CPU at 500 (EV6), 667 (EV67) or 833 MHz (EV68)
+ (max. 4 CPUs)
+
+
+ memory bus: 256-bit wide
+
+
+ 21272 Core Logic chipset
+
+
+ PS/2 mouse & keyboard port
+
+
+ memory: 200-pin JEDEC standard SDRAM DIMMS,
+ max 32 GBytes of memory
+
+
+ 2 16550A serial port
+
+
+ 1 ECP/EPP parallel port
+
+
+ ALI M1543C Ultra DMA66 IDE interface
+
+
+ expansion: 2 64 bit PCI buses
+
+
+
+ SRM console code comes standard with the ES40.
+
+ ES40 comes with an ATA CDROM drive, but uses SCSI
+ harddisks.
+
+ Memory is divided in 4 memory arrays which each contain
+ a set of 4 SDRAM DIMMs. Each DIMM is 72 bit wide and of the 100MHz
+ speed variant. An array can contain 2 sets, so 8 DIMMs max per array.
+ The DIMMs live on Memory Mother Boards (MMBs). There are 2 MMB models,
+ with 4 and 8 DIMM sockets respectively. Each MMB provides half of the
+ 256 bit memory bus width to the CPUs.
+ Given the myriad options for the memory configuration it is advisable
+ to check the system documentation for the optimum memory
+ configuration.
+
+ Dependent on the model variation the ES40 has 6 or 10 64 bit PCI
+ slots. This is basically just means the same backplane with less
+ connectors mounted.
+
+ ES40 has the same RMC remote power control as DS10 and DS20.
+ See the description of the RMC in the DS10 section of this document.
+ Most variations of ES40 have multiple power supplies, allowing
+ for N+1 redundancy. When installing CPU cards you must unplug all
+ power cords, the CPU cards receive standby power from the power
+ supplies. Maximum memory configurations need more than the default
+ number of powersupplies.
+
+ The kernel config file must contain:
+ options DEC_ST6600
+cpu EV5
+
+ Contrary to expectation there is no cpu
+ EV6 defined for inclusion in the kernel config
+ file. The cpu EV5 is mandatory to keep
+ &man.config.8; happy.
+
+